Your main wifi is also a tp-link router or not? actually the wds may have incompatible issue between different routers, if you have no internet after the setup, you may check the IP address and...

only wifi had the issue? if so, you may try to change wifi channel and channel width to see whether it helps

Hum, you may check the label on the router to see whether it is printed as EU or anything else, just noticed the those firmware on the website shows EU version

If you reboot the router, will the TPLIINKDNS update? regarding the local share, can you send a screenshot of the error and the settings page?

Actually it depends on the network type and band your sim card supported, if the network type and band are compatible with the MiFi, it should work, just like sim card and smart phone; Besides, if it...

You'd better contact the technical support directly or the service center in your area