If the client is getting a Can't Connect to the Trading Server error message in Fusion+, please ask the client to provide the following information:
Can you please paste a copy of the link you are attempting to use?
Is this your first time connecting to Fusion +?
Are you connecting as a Master Or Follower?
What action are you trying to complete? EG Accept a copier link/Create a copier Link
Which of your trading accounts are you using?
What Account are you trying to Connect to?