As answered before by Marcel, installation of Xposed Framework doesn't need a rooted device.
Yes but the most common devices need root to install xposed. I prefer TWRP + Magisk to handle this.
What exactly is clip data? Sorry for the dumb question.
When you copy data (for example text or an URL) the data is in the cache until you paste it somewhere. IMO Clip(board) data prevent apps to access this “cached data“.
Remind that you ca...
Can you please capture a logcat? If not, the problem might be visible in the Xposed log as well.
Edit: where exactly do you see this error?
The error occurs every second time I open the app and it's shown in the bottom of the app. In the...