As of 25th June 2024 until further notice only Android users can access Adult regions using Second Life Open Beta.
For anyone using iOS there is still a block on accessing Adult regions due to Apple rules (policy limitations). The lab are working on possible solutions and this may take time to resolve.
I think this is extremely frustrating for those that have homes in adult regions or those that want to visit adult regions in Second Life using iOS devices.
I will update my blog when I hear more updates on the iOS restrictions.
Daniel Voyager 