@diego504 Both AX53 and C6 v4 support Easymesh (Onemesh successor) and you should be able to achieve the topology in question. Whats more, you could connect AX53 and C6 v4 by an ethernet cable and...

@Wociech Trying some other quality made ethernet cables would be a good idea. Before addressing this with your ISP you could roll back to the previous FW release to rule out the new FW release issue.

@Wociech Here's the setting that you search: Scroll to the bottom of this page.

@Iansl2000-_ According to the TD-W8968 user guide it supports FTP server on its attached USB storage. As long as your security camera supports sending files to a FTP server you should be able to do...

@azzoug According to the thread there's a limitation in Easymesh implementation for VX1800v. You can try to connect the re700x as a regular RE (i.e. not in Easymesh) to utilize both wireless bands.

@azzoug If you want to separate VX1800v 2.4Ghz and 5GHz channels you have to disable Smart Connect (Band steering) feature - refer to this post.