LTE ZTE 3630 not working

Hello,

I have a RB 953gs with a pcie lte card from zte (Model 3630). I saw that from version 6.40 MT support this card. But it does not work for me. I can see LTE.
When I use LTE Scanner then I get “Coldn´t start - modem isn´t configured yet (6)”.

Please help.

Kangoo