Turkmen Login to see extension not working on flarum beta11. I had try everyrthing like cache clear, extension deactive and active, composer extension update etc. But always not worked.
clarkwinkelmann Yes it's been marked incompatible one year ago, see the discussion tags https://discuss.flarum.org/d/5168-login2see Your only options are to convince the original author or someone else to release an update for free, or contract someone to do that for you.
