How to disable "uBlock Origin has prevented the following page from loading"?

The page itself has the solution: there are buttons in there which offers you to disable temporarily or permanently the whole page blocking (aka "strict blocking") for the current site.

If exposing hidden redirects and not connecting at all to dubious sites is less important to you than a once-in-a-while-with-easy-temporary-or-permanent-remediation "annoyance", then the wiki documentation has the solution (add to the My rules pane):

no-strict-blocking: * true

uBlock Origin has prevented the following page from loading

uBlock Origin will block whole pages if the URL matches something in the Malware Domains list:

These domains are blocked by default:

The default behavior of uBlock Origin when newly installed is to block ads, trackers and malware sites

You can unblock them (at your own risk) by white-listing the site or by unchecking the appropriate list.

You will then be able to visit the site in question.

Assuming you actually want to continue blocking the ad/page but not be informed that uBlock Origin did block it. You can block all popups from a webpage (read more here)

Visual method

1. Open the site which has popups
2. Click the uBlock extension icon
3. Select icon which looks like two overlapping squares "Click to block all popups for this site".
4. Select the lock (that just appeared) to make this permanent.

Manual method (useful if uBlock Origin on mobile):

1. uBlock Dashboard (Settings page) -> My Rules
2. Under the Temporary rules pane add a new line with no-popups: url true in this example you would use no-popups: cimanow.tv true
3. Press Save
4. Press Commit (to block popups permanently and will copy this to the Permanent Rules on the left hand side).