Fallback to 4G

I have been using this router for a long time and have it with fallback to 4G. Worked fine until now after upgrading to the latest firmware.
Now fallback does not work. Followed the instructions and set up the router again - but still errors.
Instructions:
https://www.tp-link.com/no/support/faq/2719/
Anyone have any suggestions?
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Hi, if we manually unplug the EWAN cable, will it fall back to 4G?
If not, can I have a screenshot of the current 3G/4G backup status?
By the way, may I know your SIM carrier?
If we switch MR600 back into "3G/4G router" mode, will it work properly with the current SIM card?
Wait for your reply.
Best regards.
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Thanks for the feedback.
I may have explained myself a little poorly. I have set up the router to fallback to 4G. I plug the network cable into the lan/wan and turn on the router. The status screen shows that the router is running on 4G and not the network, see picture.
I have Telenor as my ISP.
See screenshots of the setup.
Screenshots setup
Status is that LTE is activ and not WAN with en annen ipadresse
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Hi, thank you very much for your time and patience.
I'd like to follow up on your case via email and consult the senior engineer for more advice.
Please check whether you can receive my email.
Best regards.
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