Hello,

I have been running a small weather station for 2 years and
send the images and data with a TL-MR3020 V3.2 and a
MA-260 3G (Vers. 1.0) on to my website.

About 2 weeks ago suddenly no more data was transferred.

I could see the LED on the MA-260 is blinking green. He
but got no connection to the D1 network of the German Telekom.

I pulled the stick off the MR3020 and put it straight into a notebook.
With the original software from the stick, I could immediately
establish an internet connection. The parameters in the stick are
identical to those in the MR3020. So the stick and the parameters
be correct.

APN:            internet.t-d1.de
Username:   internet
Password:    t-d1
Auth.Type:   PAP

I use this data to access the System remotely.

I still had a new TL-MR3020 router in reserve.
With this router, too, only the green LED on the stick flashes.
The routers themselves work via LAN and WLAN without any problems.

All devices have the latest firmware.

Here is the router's log file:

2021-07-11 16:00:22 [5] Httpd: Clear log.
2021-07-11 16:00:31 [6] PPP: CHAT MSG: timeout set to 16 seconds
2021-07-11 16:00:31 [6] PPP: CHAT MSG: abort on (BUSY)
2021-07-11 16:00:31 [6] PPP: CHAT MSG: abort on (NO ANSWER)
2021-07-11 16:00:31 [6] PPP: CHAT MSG: abort on (ERROR)
2021-07-11 16:00:31 [6] PPP: CHAT MSG: send (ATZ ^ M)
2021-07-11 16:00:31 [6] PPP: CHAT MSG: expect (OK)
2021-07-11 16:00:47 [6] PPP: CHAT MSG: alarm
2021-07-11 16:00:47 [6] PPP: CHAT MSG: Failed
2021-07-11 16:00:48 [3] PPP: ppp0
2021-07-11 16:01:19 [6] PPP: CHAT MSG: timeout set to 16 seconds
2021-07-11 16:01:19 [6] PPP: CHAT MSG: abort on (BUSY)
2021-07-11 16:01:19 [6] PPP: CHAT MSG: abort on (NO ANSWER)
2021-07-11 16:01:19 [6] PPP: CHAT MSG: abort on (ERROR)
2021-07-11 16:01:19 [6] PPP: CHAT MSG: send (ATZ ^ M)
2021-07-11 16:01:20 [6] PPP: CHAT MSG: expect (OK)
2021-07-11 16:01:36 [6] PPP: CHAT MSG: alarm
2021-07-11 16:01:36 [6] PPP: CHAT MSG: Failed
2021-07-11 16:01:37 [3] PPP: ppp0
2021-07-11 16:02:08 [6] PPP: CHAT MSG: timeout set to 16 seconds
2021-07-11 16:02:08 [6] PPP: CHAT MSG: abort on (BUSY)
2021-07-11 16:02:08 [6] PPP: CHAT MSG: abort on (NO ANSWER)
2021-07-11 16:02:08 [6] PPP: CHAT MSG: abort on (ERROR)
2021-07-11 16:02:08 [6] PPP: CHAT MSG: send (ATZ ^ M)
2021-07-11 16:02:08 [6] PPP: CHAT MSG: expect (OK)
2021-07-11 16:02:24 [6] PPP: CHAT MSG: alarm
2021-07-11 16:02:24 [6] PPP: CHAT MSG: Failed
2021-07-11 16:02:25 [3] PPP: ppp0

Can you help me with what may be the problem?