Turris Omnia Wi-Fi 6 side antenna connector got loose while mounting antenna

Hi, I just got new Turris Omnia Wi-Fi 6 and one of the side antenna connectors got immediately loose while mounting antenna.

There’s a video showing how to fix loose antenna connectors here, but it only shows how to do it with antenna connectors on the back of the device.

Omnia Wi-Fi 6 side antenna connectors are going through top cover which should be taken off, though.

Is there a video or any docs on how to fix side connectors being loose? Cany anyone help?