In the past I was temporary banned. I saw the comments, but I couldn’t write any new ones for a while.

This does say temp ban too. Looks like it was for 7 days originally.

Totally get you aren't eager to be involved with the community but my brain won't let go of the unexpected behavior following the ban so I did a little test for myself. There is never any pressure to respond to a comment but I hope this won't be unwelcome. I'm also sharing it it case it helps others. This isn't meant as a "gotcha", no judgment for it not being worth the effort in your end to figure it out. I block instances and comms without hesitation because I don't like being angry lol

My first Lemmy account was on .world, so I still have that and I am mod to a now dead community.

I made a post in the comm from this account and I banned myself, selecting the delete content option as well. You can see that in the mod log:

(This looks different than the other screenshots I have shared because I figured out I could see the log in the Boost app lol)

So then I tried searching for the community from this account and it didn't show up in search until I hit enter (i.e. the predictive list didn't include it)

But I couldn't make a new post:

I didn't get a notification or anything, so I can see why that's annoying for sure.

In the web UI I can see I'm banned if I look at the sidebar:

But no such luck in the Boost app:

Mods also can't unban people unless they still have access to the post/comment they banned them for...which isn't easy if you removed the post, so I guess I'm staying banned lol.

Anyways, You might try searching !memes@lemmy.ml, checking your own block list or yeah, checking the web interface. It could also be a federation issue which the ! in front of the comm name might help with.