The YOROI extension (crypto wallet) used to work well on Firefox but it has stopped working on all our Mint 20.2 compuers and whatever we do we can't get it to work in Firefox. It works OK in Chrome - but I want to continue to use it in Firefox as I always used to. Could it be something to do with Firefox not supporting WebUSB? What can we do? Would a later version of Mint (say Mint 21) solve the problem? Thank you.