All UTM parameters are lost

Hi,
a few days ago I noticed that I don’t see regular sources in Analytics. I checked the redirect URLs (https://zello.one/?redirect_to=random&after=1%20month%20ago&cache=20&utm_source=pr_push&utm_medium=denied&utm_campaign=correct) and if you try to click on it, it will redirect you correctly, however it will strip all the UTM parameters, and nothing will be seen in the GA.

I also tried the new ‘bias’ feature, and it also ‘losing’ the UTM data: https://zello.one/?redirect_to=random&count=20&bias=80&utm_source=pr_push&utm_medium=denied&utm_campaign=correct

Any ideas why this might be happening?

The page I need help with: [log in to see the link]