I want to export my wallet address to another wallet like metamask or any other, but I don't see any option that will help me. I can't even connect it with walletconnect. Can you help me?

Downloaded for Firefox and is in list of add ons. However there is no activation icon in Firefox toolbar appearing and no way to actually open this wallet. It can't be activated from inside the add ons list either. Basically I downloaded it successfully but it can't be used. There is no actual RUN/OPEN icon to press anywhere and get going.