Had a case with this issue, heard nothing from Google since 23 November
when they emailed and asked me to be patient. This is pretty poor. Going
to begin moving my services elsewhere and replacing my google devices.
Exact same thing, been on and off for about 6 weeks now. Thought I had
it working but now just the grey G. If it’s not sorted soon, I’ll be
pulling out of the Google ecosystem, I feel bad about more e-waste.