Is the router located fairly close to the machine? Is it in another room? It might be a dropped signal, but at this point, you might just want to wait to let someone from support take a look at your logs and see if they can determine what is causing it. (They can actually see if it is a dropped signal or a temperature issue, and give you specific steps to take to try to fix it.)
You don’t need to reconnect to the Wifi if you have already established a connection (you did). But the signal might be weak - it’s stopping the print.
There are troubleshooting steps here for dealing with sketchy Wifi issues if you want to check them out while you are waiting to hear from support.
If not, you can just wait to hear from them.