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If its just a reminder dont worry about it. If you do something wrong again it may be considered in that case. But by itself a reminder is just a reminder.

Also if its just a reminder like "Sigs should be under 500x500 and under 100kb" then those dont really matter at all as long as you fix your sig.

i haven't done anything but it said a reminder for no Adult content

I got one of those a couple years ago for a picture which I assumed was wel under the PG13 label (As it is way more pg that a lot of whats shared). But still one user didnt agree and reported it and a mod basically just sent me a reminder. It was no biggie, what I posted was questionable at worst (Didnt show any genitals or such). If you blatently post pornographic images that would be a direct ban. If you just posted something that could have been offensive, note that you did it and dont do it again you will be fine.

Of course if it wasnt images and you were doing any form of cybering (Even in PMs) then thats clearly against the rules and shouldnt be done anywhere on gaia. So basically yeah dont do that.

But all in all if its a warning, its just a warning as long as you do what they say you will be fine.