It was lowered to L8 at the beginning of the year, before the sale of Wayfarer to Scopely was announced. It’s possible that since the last announcement from staff that they are not allowing any new Ingress players to join Wayfarer, although no official date was listed. This is the specific part that was posted by staff on May 6th:
I don’t know what page you are referring to, but the help pages say L37 PoGo players are only eligible currently.
Pokémon GO players Level 37+ are eligible to participate in the program. More Niantic games may be eligible to contribute to the Wayfarer program in the future.
I did, and I provided the link to the help pages that note that only L37+ PoGo players are allowed to participate. Wayfarer is known to not always update some of the pages in a timely manner, and this seems to be the case.
If you want to participate in Wayfarer as of May 6th, you have to be at least L37 in PoGo; new Ingress players are no longer being accepted.