Hi Renee,
Thanks for the suggestions. I was able to enable Analytics through Site Kit once in troubleshooting mode – there was another GA plugin that was conflicting I think (although I wasn’t able to enable Analytics unless in troubleshooting mode, even with that plugin disabled).
Analytics seems to remain connected even out of troubleshooting mode, is that expected?
2) Relative URL is an old WP.org plugin, but should not have been active, thanks for spotting that!