I've replicated your setup, and the only difference between RUT2_R_00.07.03.3 and RUT2_R_00.07.02.7 that I could notice is that in the header there no longer is user-agent: "curl/7.83.1" included:
Could this be causing any issues on your end?
Are you able to verify that these requests are not reaching your server?
Perhaps you could take a screenshot of your configuration and attach it to the original post? An even better option would be to generate a troubleshoot file. that can be done by navigating to System → Administration → Troubleshoot. The file/files can be attached to the original post and will only be visible to Teltonika moderators.
Also, what firmware version did you upgrade from?