I've installed TeamViewer for Synology NAS (DS212j, DSM 6.2.3-25426).
I've tried with TeamViewer 15.6.7 on macOS 10.15.5 (Catalina) and also with my iPhone TeamViewer app.
They always failed. Here is the log from my NAS:
[logs removed per Community Guidelines]
Any help would be very appreciated.
Thanks in advance,
Alan