Yeah, that’s a bummer. rigmarole can correct me if I’m wrong, but I believe the forum limits editing until a user reaches a number of posts made or total time read to keep people linking to things and then changing the links later to something bad. Maybe you ran into this with just a draft saved?
Most browsers and webpages are better these days, but I’ve been burned multiple times (not here) writing something, hitting “Post”, and poof… it’s gone. I usually use Obsidian or a scratchpad app to write and then paste it into the forum box.
Once you are up to it😫, feel free to post your follow-up sync questions over there.