It should not be required but you could go and check that your LTaP APN settings are correct and that it is set to use only LTE network mode.

Just to give my two cents on this subject as I had been struggling with this too. Also, I needed the LHG device for my rural estate and this will be just for home/home office. This is purposely kept very basic and aimed to help people to get LTE passthrough and the management working while using Mik...

Hello, I am no ways a network expert and picked up the MikroTik LHG LTE6: a) because I am living in a rural area with bad coverage and I do not think it will ever improve; b) I like technology and learning something new; Now, it seems that I've managed to get the LHG working in LTE passthrough mode ...

Hello,

Have you tried using the Quick Set feature?

Is the APN correct?
Have you enabled Firewall Router?
Have you enabled DHCP Server?
Have you enabled NAT?