Can't transfer from mycloud to mycloud Home

New 8TB drive purchased. Both drive are visible and can log into both so… Used the help for guidance and in step 2 services menu not there. Did fine network import so enabled and selected next. Got error message

This page isn’t working right now

prod-31cdfc8017b5028.mycloud.com can’t currently handle this request.
HTTP ERROR 502

now what?

Still no luck moving data.
In fact I don’t like the app and thinking of sending drive for refund!