Hello Some users can not activate their account with activation link. Activation link gives 404 ( fetchWrapper.mjs:111) Our discourse version is 2.4.0.beta10
You’ll need to share those links.
Sometimes the mail service rewrites them.
I found problem but I dont know how can I fix this. The borken link is:
Some emails has first type link some emails has second type.
I suggest updating to latest Discourse code and trying again?