I strongly echo many comments in this review area. Maxim, please communicate to us regarding the difficulties involved in modifying "Enhancer for YouTube™ by Maxime RF" ( or modifying a recently compatible extension, in general, to achieve this ). (( By the way, the following is your website, correct ? : https://www.mrfdev.com/enhancer-for-youtube )) so that it is correctly signed for current inclusion as an extension for Firefox Quantum ( a change in security for FF users since one of FF's most recent updates. I have 66.0.3 and about to UD to 66.0.4 in a couple mins.
