@Domada If it's a U.S. model, looks like there's an update on the website. Here's the download file for you. As for the WLAN security settings, thanks for that picture. Can you confirm all of your...

@Domada Can you share the security settings being used for your WLAN? Also, would it be possible to update the firmware of the router as well?

@Kamillll Would it be possible to enable and disable the USB Modem port as well? Also, was this feature previously working or is this the first time configuring the Link Backup feature?

@BigGuyFi Was MLO working before and suddenly stopped, or has MLO never worked on this AP? Also, is it possible to revert to firmware version 1.0.0 to see if the issue persists?

@Domada Have you checked your DHCP pool size? Is it large enough to encompass all of your devices?

@Bebe1980 The PTZ control is within the Device's Settings.