iOS gives you a very limited time to roll back an up date.
On my iPads and computers I have all auto update functions turned off or at the
very least set to notify of an update but require manually starting the update.
Thanks for the heads up to a possible issue, I’ll keep my iPads at 13.3 for the time
being.
Does the mixers WIFI network show up on the WIFI list and can you connect
to that network?
Can you connect to other WIFI networks and get on line?
Is you mixer WIFI network using a hidden SSID?
If the mixers WIFI is showing up on the list maybe try forgetting/removing it from the list and do a reconnect.