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Got it, added to backlog.

Fixed. To make sure you have the fix, close Dota 2, close Overwolf, start Overwolf and wait 1 minute, then start Dota 2.

Can you link your Dotabuff please so I can see why this is happening?

Skill is supposed to be auto detected according to your and your opponents last matches.

What is you skill level, and what skill level does DotaPlus detect?

Yeah, hero detection is down since the latest Dota 2 update.

Working on a fix!