Problem with getting a new build

[Leoc2155]

I joined Windows Insider Program Canary Channel and have not been receiving a new build since 26100.1 ge_release. I tried downloading an iso file of 26100.1105 and installing it (with "keep files and apps"), downloading a repair version from Windows Update, signing out my microsoft account (using a local account) and signing in, editing the BranchName in Registry editor, but none of them worked. Is it possible to fix the Windows Insider Program configuration on my Windows without doing a clean installation? 

[#2]

Sometimes, there might be known issues with a specific build that affect updates. Check the Windows Insider Blog or Feedback Hub for any announcements about update problems.

[#3]

@EstherMom I checked the Windows Insider Blog. The problem of sticking at some builds had been on the Canary Channel release notes for months before it disappeared when I checked it a few days ago. (I thought the problem might have been fixed) However, I still cannot recieve any new builds. So I'm wondering how to reset the Windows Insider Program on my Windows to default, which might be a solution to the problem.