Having a similar issue.
I can get an echo back on 99, people can hear me on 00, 01, etc but my DV4mini is not transmitting anything back out.
So I tried with a buddy of mine who also has a DV4Mini, and its about 50/50 this way. More so he couldn't hear me, but I hear him 80% of the time. Back to 00 reflector, everyone is hearing me, but I'm not even getting 1 packet sent out.
DV4Mini works with no issues on DMR and Dstar. I don't have a C4FM YSF radio, and P-25 and NXDN are acting like above.
Any ideas?
Ed
K4XXX