Xiaomi Readmi 9 and Universal AddOn

Hi there

For the past few days I have been having problems connecting to a Xiaomi Readmi 9.

It seems that TeamViewer connects to the smartphone, and the message appears in the Readmi that I am connected. However I stay in the "Connecting to..." screen indefinitely.

Does anyone know if Universal AddOn no longer works with the Xiaomi, if there are other AddOn's I can use, or how to fix and get back to using TeamViewer with the Xiaomi?

Thanks in advance