I will write out what I would do to try and fix the problem, sometimes reading manuals can be bewildering.
If running Insider builds there are no guarantees or compensation from Microsoft, sorry, we are volunteers on this forum trying to help so we don't work for Microsoft.
It might take me a couple days to write out so don't give up.
At what stage could you not progress or got an error, could you take a picture of the error please.