Touchscreen won‘t work after few seconds

Watch Series 9

Hello,

i coudn´t find a solution for this.

The Touch of my watch stops working after a few seconds.

when I restart the watch I can input the code and use the watch normally for about 3-5 seconds, after that the touchscreen won´t work.

I can use the buttons without problems.

I also made a hard reset but the problem is still there...

has anybody witnessed something similar and found a Solution?

I have to admit that my watch fell to the ground from a normal height about 10 days ago.

However, there were no scratches on the protective case or the watch.

I had no Problems until today. If this would be caused because of this - why does the Watch always work for a few seconds?