MKRFOX1200 Sigfox not receiving more than one message after disengaging

Hello,
I am having exactly this issue https://ask.sigfox.com/questions/2849/need-to-disengage-sequence-number-to-receive.html

Hi.

My device 1CF5B5 has stopped working correctly.

No more messages in the backend for a while.

Trying to debug, it seems that I have to "Invalid message sequence from Device #1CF5B5: expected 1, actual 4095" each time I want to receive.

ex:

Disengage

Send msg1.

msg1 received with Break in message sequence from Device #1CF5B5 [0 inferior 4095]

Send msg2.

msg2 NOT received, events: Invalid message sequence from Device #1CF5B5: expected 1, actual 4095

Disengage

Send msg3.

msg3 received with Break in message sequence from Device #1CF5B5 [0 inferior 4095]