Can you describe what exactly goes wrong? Then we can fix it.
6.2.8 is the last officially supported manifest V2 version. We must switch to manifest V3, and naturally this complex change is causing some teething issues.
But we plan to fix every issue that is reported to us ASAP - so please report more details. Ideally make a new forum post for each issue.
For more details see Ui.Vision RPA Chrome extension: Migration from Manifest V2 to Manifest V3 [Completed 😃] - #26 by admin