Single channel gateway and settings

[Jezek-David]

So I finally switched from TTN to Thingspeak and MQTT because of the gateway (I have a single channel and that was a problem). This partially solved the problem. Via AT + DEFMODE = 4, RF setting and correct AT + TXT structure. I can send data to the Thingspeak server. But the gateway only receives every 8 messages. I tried to set AT + CHMSK = 000 ... But that didn't solve anything. Can I somehow influence the module to send on the same channel every time?