EuControl / EUCON can't find app

[MonkRocker]

Pro Tools 2021.3.0
EuControl: 2021.6.1.7
Avid Control: 2021.6.1.94

Running Control on an iPad (7th gen) running iOS 13.1

EuControl can see the iPad just fine, and I am able to add it to the My Surfaces list. (it's the only one)

Have enabled EUCON in ProTools, but despite connecting just fine, the app name on the About screen in Control remains blank and I just get blank screens on the app, and the app doesn't control anything.

I tried Restart EUCON applications a few times - no luck.
Tried trashing ProTools prefs. No luck.
Have tried starting EuControl first - no luck.
Tried starting ProTools first. - no luck.
Tried disabling EUCON in ProTools, restarting the machine and re-enabling it (both with and without a reboot after enabling) - no luck.

So yeah. Help?