I've been using my Plusnet sim with a Pixel 7 since the latter's release 3 weeks ago. Initially I had no problem accessing 4G, I live centrally in Coventry which normally has excellent 4G coverage, but for at least the last week I've noticed that I can only get H+.
I've checked all my APN settings and I can't see an issue there. Is there a service disruption that I'm not aware of? I've tried restarting my phone etc.