Has somebody mastered to upload using dragino D23-LB via MQTT?

REST over HTTP is not supported- also python MQTT upload fails

The procedure so far:

AT+PRO=3,1 (some claim 0 because thingspeak needs hex)

AT+CLIENT= that long code from the DEVICE page

AT+UNAME= that code is the same on the DEVICE page, very dubious

AT+PWD= the exported PWD from that DEVICE page which cannot be shown or copied, very dubious

AT+PUBTOPIC= the number only form the CHENNEL page

no subtopic

AT+SERVADDR=mqtt3.tgingspeak.com,1883

The most wanted AT command is to reset all of that,

many thanks