I have exactly the same problem as described here. I also bought my Tab S7+ directly from Samsung and live in Germany. Please fix this problem Samsung, I would like to also use the edge Panel Apps which I use on my S21 on my Tab S7+. This Problem exists for a while now, it would be nice if it gets fixed soon.
Same with S7 tablet bought from Samsung website in France. What is the status for this question ? Is this an issue or is there a reason explaining why this would not be possible on s7 tablet ?
I also tested to develop a panel and install it in the Tab S7 (using Galaxy Edge SDK). It did not work on the Galaxy tab S7 but worked on Galaxy s10e smartphone.
On the phone the new panels appear in the list of panel you can select. On the tablet they do not show. Why ?
Zfold 3 owner in UK here. Same issue, no option to download panels from the galaxy store, such a shame because I used some panels alot such as calculator, notes and few others. Maybe it'll come back with one UI 4
Got the One UI 4 update recently on Tab S7, I still can't download new panels. Not tried to install the one I developed yet.
Do we have any information about this feature, if it is intended to be made available to tablets/folds some time ?