Cannot connect to MQTT server BC 35G modem

[AlexIdushy]

Yes. I told about at this post.

Connecting to server by MQTT and TSL with certificates. Answer for OPEN is +QMTOPEN: 0,-1

Hi, people. I have modem M08-R. I get “+QMTOPEN: 0,-1” from server when trying to open. Can i get more information about errors. Can i, for example, get information about - server accepted certificate or not. My log below. what must i send questions to server owner best? what is directions for this. MQTT Explorer connected success - server alive. AT OK ATI Quectel_Ltd Quectel_M08R Revision: M08RMAR01A03 OK AT+QMTCFG=“VERSION”,0,1 OK AT+QMTCFG=“SSL”,0,1,2 OK AT+QSECWRITE=“RAM:cacert.…