They changed the loot boxes in e.g. dota2 to always show what’s in them, the argument being that you’re no longer gambling then since you see what you buy. This of course conveniently ignores the fact that the gambling aspect just moved to the lootbox you buy after the one you see

In discord you can edit messages by sending a subsequent message like this s/old/new

There’s plenty, tuta calendar, proton calendar, nextcloud if you want to self-host ,…

I got it from f-droid, but you could pull it from github as well

Check out Davx5, that’s what I used to pull contacts and calendar