AFAIK the brick wall should come down immediately or within minutes. I had an issue with this days ago whilst using LW in a different account. I had closed LW from the 1st account, but when I opened LW in the 2nd account, it said the port was not available. I had to wait some time for it to become available. I'm guessing there was some type of lag between LW closing down & ... ?
If in doubt, disconnect LW & reconnect or as you suggested, re-open LW.