Thank you! Disabling the themes gives this error:
One network request failed:
https://forums.codexwriters.com/assets/discourse-e3f649566699cf8c4417bc3595cd3420859fcd938a38468f5da3380d92cd57fa.js
We are using Cloudflare, I thought just for DNS rather than as a CDN, but I’ll need to check with the other admin, who set that up.