I updated the betas to get more detailed information, but I'll give you instructions privately to avoid you pasting passwords etc personal information to public

Logs sent by email.
Although it's funny why it affected, because RNOXfer reuses the connection and doesn't close it between the commands... unless it was because it tried to make the initial connection twice... well, who knows, but good that it works now and we know a work-around
Thanks for your work.
Could you try to disable the "Verify certificates" option from Settings, and try again? Then it should make only one connection try initially if it's that what confuses it.
Oh, interesting... does it open any window or does it freeze before anything visible is shown? Do you have the latest AmiSSL (4.5)? Do you have different versions of .hwp files in RNOXfer's directory and in libs:Hollywood/ ?
With "Verify certificates" unchecked and "TLSOptions NoSessionReuseRequired" commented, the requester opens: