"No signal" errors in blue iris?

I have been suffering "no signal" error from stream that have been working solid until last week. My cameras are working normally when using them with cameras own app. They are online, they have ip address. For some reason blue iris shows them as "no signal" until connection is restored for some reason (according blue iris log). This happens multiple times per day. I have 7 cameras and they all are doing exactly the same.

https://preview.redd.it/b5omp8of61d61.jpg?width=588&format=pjpg&auto=webp&s=ed8892ce78fe62008eca636e2573e551fd46a179

I'm running version 5.3.8.12.

This is what my log file says:

https://preview.redd.it/i801ld8d61d61.jpg?width=529&format=pjpg&auto=webp&s=4356c0678d11df566a8e0d2dcde65a2a5e8556fe

Anyone else having same issues and could it be something with the version I'm using?