After updating beta plugins Patch.v4 and Reporting ver 18.104.22.1684, one of my GGS servers got error message "Failed to get a matching email route provider", after checking Email setting in SiteAdmin, all email setting gone and moved to Email address patterns (this case the same as problem with ProxyMessage provider I have reported before).
I have try to re-enter the email setting and save it, but the problem persist (all setting moved to Email address patterns again).
I'll send screenshot to support. Please check. Thank you.