Not sure if this is the proper place to post this. In quotes below is what I posted on the regular forum but it was removed when I used the word 'beta' - didn't know that was an issue. The email then sent me here.
"Updated both my MacBook Pro (M1, Late 2020) and my iPhone 13 Pro with the new Tahoe 26 Public Beta and now my phone number is "unavailable for iMessage and FaceTime" It's listed on the website for sign in to the account, but now messages on my different devices don't sync and I can't send from my number or receive messages in new threads to my number.
After an hour or so of digging online I called their support - who didn't know about Tahoe. The best he could tell me is wait 24 hours for the system to catch up. Sigh. It's the same number I've had since (well before) iPhone 2 when I first set up the account. I've been doing the betas since they've been available, and I expect quirks and issues. I've just never had an issue this invasive."
Follow up - existing threads still seem to work, I'm assuming I'm missing anyone new texting me, since my number isn't listed