Unable to sync settings when on different (but connected) realms.

I am on EU-Turalyon, someone else is on EU-Doomhammer. These are connected realms.

When we try to sync settings in either direction the sender goes to 100%, but the receiver is stuck on "Receiving data".

To Reproduce
Steps to reproduce the behavior:

1. Go to Synchronizer and select target on a different server.
2. Have target ready to sync.
3. Click Sync.
4. Accept incomming sync on remote user.
5. Wait & never be synced

Expected behavior
Sync to be possible cross server.

Saved Variables
unable to add .lua, will try after posted.

This should be fixed with 3.10.5.

RCLootCouncil.txt
lua as .txt

A very interesting problem indeed. Comms seems to be sending, but is never received. Going to take a while to figure out...