@szymok That's normal, These DNS queries are sent to determine if the device has an internet access (if it's online) - check this post.

@FahadAlamri Use this guide for resetting your product.

@OSH Here's your router user guide. There are several configuration modes that MR3020 can be setup in. Here's a brief video setup.

@OSH The exact model of the device and its hardware version and FW region are printed on the device bottom sticker - details.

@AlanHockey I have described a few ways to access your RE web management page. You have to find a suitable option to use among these because there's no other available. Probably installing a Tether...

@Rene_H You can try upgrading the FW version from here and check if there's any improvement.