Avid Dock - Protool 2018.12 - Eucon Firmware compatibility

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Hey Everyone !
I'm running Protools 2018.12 on Imac Highsierra 10.13.6,
I'm using the Avid dock 1.1.18.0 Frimware, everything is fine until my AvidControl App on my Ipad updateded to 2021.6.1.94, and then Protools was not able to connect to the App, so Since I couldn't Downgrade the app on the Ipad, I Updated the EuControl to the Last version. Nothing works, I tried some older versions. Nothing worked, so I just end up on the 4.7.4.10 version.
So, the Avidcontrol Mismatched with the Eucontrol, and the Dock became unavailable on the Eucontrol, and Protools cannot link with them.

So,
Is it possible to get the older AvidControl on the Ipad in order to fix the problem ?
or
Is there any compatibility with the new AvidControl 2021.6.1.94 and protools 2018.12 ?
and
If I upgrade the firmware of the Dock to the latest version and the Eucontrol latest version to match with the new AvidControl 2021.6.1.94, is there any compatibility with the Protools 2018.12 ?

is There any solution ?
Thank you so much for taking the time !