Hello! I have taken a lot of time to investigate endorsement ratings and how they work. Endorsement levels can decrease for a variety of reasons and can often be recovered.
The most common reasons that an endorsement level will decrease is due to decay over games played without receiving enough endorsements. Endorsement levels will reduce to a lower level if you did not receive enough endorsements within the most recent games played. Note that this is not a time-based decay (like Diamond and higher Competitive SR). Here are my recommended quota for maintaining and reaching certain endorsement levels:
- Players should earn one endorsement within two games played to reach and maintain level 2.
- Players should earn one endorsement within every game played to reach and maintain level 3.
- Players should earn two endorsements within every game played to reach and maintain level 4.
- Players should earn three endorsements within every game played to reach and maintain level 5.
Leaving games negatively affect your endorsement rating. Make sure in casual game modes to leave only after a match completes and before the next one starts. If you are penalized for leaving a Competitive Match, you will automatically take an instant endorsement level loss.
Violating the Blizzard Code-of-Conduct and receiving an account silence or suspension will result in a complete loss of your Endorsement ratings, demoting to level 0 (one level below the default).
You cannot lose endorsements for:
- Being falsely reported by other players. A report itself will not trigger a loss of endorsement rating, only an account action issued by Blizzard will.
- Electing to leave a Competitive Match by the option of forfeit when there is a leaver on your team for more than 2 minutes.
- Not playing the game for an extended period of time.