I had to switch from Alpha Skip to Beta to force an update.

i had this problem and for me to fix it i had to switch form wired to wireless but that's due to me being an insider alpha skip ahead (pre alpha in my opinion)

Well if he's in the insider programn then he got a update today had the same issue the alpha & apha skip ahead builds are broken for 50% of the people that are ih that group so don't update your console if you're in alpha or alpha skip ahead

You need to either be in the uk or us and be an xbox insider on ring beta, alpha or alpha skip ahead.

Hi,

you can change rings in the xbox insider hub when yo manage the xbox update preview rings note that alpha and alpha skip ahead are invite only but you should be able to join the beta ring

Not sure how they would just kick you out. I know that they can remove you from Alpha and Alpha Skip Ahead if you aren't active enough but you should be able to get into Beta. The only other way you'd be kicked out is if you had any enforcement action.

As you know the two Alpha rings are invite only by the development team.