You are banned from support due to your toxic behavior and your last review, where you spread false information. Your question has been answered clearly more than once.
You can't download any beta version because you are banned from support. Normal users can.
If someone needs multiple updates a month, then I agree they really shouldn't buy it. Stable software doesn't need updates every week or so.
There is a beta version that supports 1.20.6 and 1.21 on my Discord. Because Protocolize is inactive, I needed to use a different dependency for packet manipulation, and this change took some time. Also, the new dependency still had some issues, which delayed the stable update. This information is also on my Discord, which was also communicated to you.
https://postimg.cc/gallery/rwz5DTh