PayPal doesn’t like OnlyFans, as some people before me have written. This is also one of the reasons why many are now switching to alternative platforms. If you are not only interested in erotic content, you can also take a look at Patreon or Contenized. They are similar in concept, but different.
Just like OF, Patreon has the membership model. Many who have OF are also active on Patreon. They also offer PayPal, as far as I am properly informed.
Contenized is from Germany and offers all other common payment methods in addition to PayPal. Not that many models etc. are active there yet, but maybe the people you are looking for are already there. Personally, I like it best, even if it is still a little more unknown.
Have fun and I hope I could help 🙂