For anyone else, the wonderful team at Cloudron assisted further and identified the issue is that my internet service (and router) did not have ipv6 but the server was trying to use ipv6 to connect for appstore auth. Adding ipv6 with my isp and enabling in router "resolved" the issue. It is not currently known why my server was insisting on using ipv6 or how to stop that if I was unable to add it.
M
meisner57
@meisner57