So ive been trying to get my APRS setup working for about two weeks now and im losing my mind a little. Running a TM-D710G with the internal TNC, got my callsign and SSID set correctly (at least i think so), path is set to WIDE1-1,WIDE2-1 and im transmitting every 5 minutes. I can hear other stations just fine on 144.390 and the radio is clearly keying up when it should beacon but nothing ever shows up on aprs.fi. not even a delayed packet or anything.

Tried changing the symbol, tried shortening the beacon interval to see if that helped, even drove around for a bit thinking maybe my home location is in a dead spot. Other stations in my area are showing up fine so the frequency is obviously active. Starting to wonder if theres something wrong with my path config or maybe the SSID is the issue somehow. Anyone dealt with this before?

First thing id check is whether the TNC is actually encoding your callsign right. On the D710 theres a separate menu for the packet callsign vs the regular radio callsign and a lot of people set one and forget the other. Go into the TNC settings specifically and make sure the source callsign matches what you think you set. Also double-check that your SSID is something valid - if you accidentally put a letter in there instead of a number it can cause weird behavior.

The other thing worth trying is connecting a laptop via the data port and running something like Dire Wolf or even just a dumb terminal to see the raw packets coming out before they go over the air. That way you know exactly what the TNC is actually sending rather than guessing. If the packet looks right locally then the problem is RF or path, but at least you've eliminated the encoding side.

yeah had something similar happen to me last year, turned out one of my digipeaters in the area had been offline for months and i just assumed the network was healthy because i could receive fine. receiving and being digipeated are totally different things obviously. might be worth checking if any of the nearby fill-in digis are actually active by watching for their own beacons.

also WIDE2-1 on its own might get you further than WIDE1-1,WIDE2-1 depending on how your local network is configured, some areas the WIDE1 layer isnt really needed