If anyone else gets a system abuse message from aprs.fi, it could be your squelch setting causing repeated transmissions.
Discovered my inexpensive BAOFENG transceiver squelch had inadvertently been set too high and was chopping off packet signals. Setting squelch to zero seems to have alleviated the problem.
At least the warning message has changed from red to black. Hope message eventually disappears.
Classic "Short Tail Six" A Model N822PM (Res)
99% done, 1% to go! Oh so close!