MementoMori

How to Fix Common Game Errors

App Data Recovery

App Data Recovery lets you recover the data in case errors prevent you from progressing in the game. You can fix the bugs caused by the app data corruption with these steps.

1	Click the Settings icon at the upper-right corner of the screen before you enter the game.
2	On the Menu, click App Data Recovery.
3	A window will pop out with a reminder that you are about to do app data recovery. Click Recover. This will recover the data needed.

Deleting and Reinstalling the App

Another way to fix errors is to delete and reinstall the app. Make sure to do this when you have already performed an Account Link.

Deleting and reinstalling the app without performing an Account Link will reset your game data to the beginning, and you might lose your data altogether.

Account Link Guide

Contact Customer Support

If the previous solutions do not fix the issue, it is time to report it to customer support.

How to Delete Your Account
1	Click the Settings icon at the upper-right corner of the screen.
2	From the Menu, click Contact Us.
3	A window will pop out with a list of FAQs. Scroll down and click Contact.
4	Select Bug/Error from the options.
5	This will direct you to an external window to your email. Create an email and mention that App Data Recovery and reinstalling the app did not fix the problem.

MementoMori Related Guides

Tips and Tricks

All Tips and Tricks

Beginner's Guides

Beginner's Guides
Beginner's Guide	Beginner Mistakes to Avoid
The Best World To Play In for Beginners	Reroll Guide
Combat System Explained	Stats Explained
Daily Quests and Tasks Checklist	What to Do After the Start Dash Missions
Team Building Guide	How to Make Your Characters Stronger
Buffs and Debuffs Guide	How to Unlock All Game Modes and Features
How to Get Kindling Orbs in the Early Game	How to Pull for Characters
Returning Players Guide	Glossary For Beginners
How to Fix Slow Progress	How to Overcome the Main Quest
Awakening Guide	Leveling Guide
All Redeem Codes	Reset Character Guide: How to Reset Character
All Character Rarity	Best Beginner Team

Gear Guides

Gear Guides
Gear Guide	How to Upgrade Gear
How to do Gear Transfer Properly	Rune Guide
What Runes Should I Use?	How Much Should You Level Up Your Runes
Important Gear Stats and How to Raise Them	How to Augment Gear
What Do You Do if You Augmented the Wrong Gear?	Reforging Gear Guide
What are Relics?	Which Relics Should I Prioritize
How to Get Metatron Gear	Weapon Sync Guide
Reset Enhanced Gear Guide	-

Farming Guides

Farming Guides
Gold Farming Guide	EXP & Kindling Orb Farming Guide
Magic Crystals Farming Guide	Space-Time Coins Farming Guide
How to Get Gold in the Late Game	How to Collect and Use Holy Fragments
How to Collect and Use Boss Tickets	Tree of Life's Dew Explained
Where to Spend Tree of Life's Dew	Should I Save for Tree of Life's Dew?
How to Collect and Use Witch's Letter and Witch's Invitation	How to Collect and Use Upgrade Panacea
How to Collect and Use Fruit of Healing	How to Collect and Use Rune Tickets
How to Collect and Use Shards	Chest Keys Guide
How to Collect and Use Character Coins	How to Collect and Use Battle Coins
What is Adamantite?	How to Efficiently Collect Diamonds
How to Collect and Use Dark Perfume	How to Collect and Use Guild Coins
How to Get Scarlet Jewel	-

Game Mechanics

Game Mechanics
Friends Guide	How To Set Home Screen Characters
How to Test Your Characters and Teams	How to Raise Player Rank Fast
How to Use the Wish List Feature?	Level Link System Guide
What is Soul Affinity?	Party Level Link System Guide
Random Target Selection Guide	List of Ultra Sale Packs
What is the VIP Feature and its Recommended Level?	Comeback Missions Guide
Recommended Premium Packs	Weekly Topics Feature
How to View a Witch's Qlipha's Form	Into the Cave Resonant with Lament Event Guide
Account Link Guide	Soul Bonuses and When to Use Them
How to Use the Music Player	-

Intermediate Guides

Intermediate Guides
Intermediate Guide	Should You Automatically Release N Characters?
Who Should I Awaken to LR First?	Fast Progression Guide
Alchemy Workshop Guide	Overcoming Character Level Cap
Arcana Explained	Unique Weapons Guide
How to Go Beyond Level 240	Speed Tuning Guide
How To Awaken Characters Without Enough Copies	How to Unlock LR Rarity
How to Awaken Your Character Beyond LR+5	Mid Game Progression Guide
What Upgrades Should You Do First	Florence vs Cordie: Who Should You Pick?

Gacha Guides

Gacha Guides
Who to Pull Using Witch's Invitation	Character Gacha Pull Rates and Bonus Rewards
Should You Pull for Festive Natasha	Gacha Gear Banner Guide
Which Gacha Gear Set Should You Build?	What Is the Invocation of Chance?

Trial Guides

Trial Guides
List of All Trials and Their Rewards	Cave of Space-Time Guide
Tower of Infinity Guide	Fountain of Prayers Guide
Tower of Souls Guide	Temple of Illusions Guide

Guild Guides

Guild Guides
Guild Guide	How to Accept Guild Invites
Guild Raid Guide	Guild Stock Guide
Guild Battle Guide	Grand Battle Guide
Guild Tree Guide	Guild Raid of the Fox Spirit Guide
Guild Benefits and Perks	-

PvP Guides

PVP Guides
When Should You Start Playing PvP	Battle League PvP Guide
Legend League PvP Guide	PvP Team Building Guide

FAQs

FAQs
What Should You Buy at the Shop?	When Should You Start Spending on the Game
How to Enjoy the Game to the Fullest	How to Reset Game Data and Delete Your Account
How to Change Your World and Server	How to Install PC Version
How Many Diamonds Can You Get In a Day?	Why Can't I Use New Characters in the Battle League?
What to Do if You Don't Have Cordie or Florence at the Start	What to Buy During Events
What Does Streamer Mode Do?	System Requirements and Specs
How to Fix Common Game Errors	Should I Buy From the Special Shop?
How to Download MementoMori	-

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How to Fix Common Game Errors