[ALUG] Evolution question and puzzle

*taps microphone* is this thing still on? Yes? Right, so here goes. 1. Anyone know how to stop Evolution repeatedly asking for password authentication? I tried typing in my passwords. Didn't work. I tried uninstalling and reinstalling. Didn't work. Which brings me to my puzzle. 2. I can, in theory, install Evolution from the Flatpak, but it will not show up in the main menu. I have googled (actually DuckDuckGo) for a workaround and can't make head or tail of the advice. Bev. P.S. (Sorry if you get this twice. I hoped I'd sent the first as plain text but hadn't.)