Addon Upgrade to 2.8x required

IDK if this is the right place to post recently i have been facing this with alot of addons that does not work with blender 2.91 as they say " Upgrade to 2.8x required" whats the best solution for this?

You can do a search to see if an updated version exists, or, if you are familiar with a little code, try and see what needs altering, depending on the complexity of the addon. The API changed significantly from 2.79 to 2.8 & 2.9 so some function are depreciated, some are removed, syntax has changed.