One of our users pointed out that Kerika wasn’t allowing people to be invited if their email addresses were from one of the newer top-level domains that are being used: e.g. “.build”.
We have fixed that. The problem was the client software had some validation rules, written a long time ago, that checked for three characters to appear after the “.” in the end of an email address.
That’s obviously not a good idea anymore, now that there are dozens of top-level domains…