I have had 7 engines in my list over the past many years all working fine thru the WIU and TIU. A week ago, nada. Deleted APP as was suggested and reloaded it. Rebooted WIU & TIU. All lights work properly. Then a couple of days ago out of the blue when I tried to add engines again, it recognized 3 that were on the tracks, so I loaded them. It is a hit and miss situation.
The next day, I got "Connection failed" or "timed out" again and again.
Today I tried again and was having no success. I thought what the heck I will start one of the engines up. After it started up I went to Add Engines and one of my other engines WAS recognized and added. Tried it again later and no luck.
There is a BUG among us. I'll try again tomorrow. It is now 2023 - has anyone found a work around?