Well, I report it here then.
Browser: Version 17.4.1 (19618.1.15.11.14)
Malwarebytes Browser Guard Version: 2.4.0, all protections enabled.
Pages at https://www.boss.info and their descendants like https://www.boss.info/global/support/by_product/me-90/updates_drivers/
Everything returned "blocked by content blocker" or something like that. Disabling Browser Guard for the page didn't solved the issue, I had to disable it in the browsers Settings/Extensions page.
Reload without content blocker worked properly, I was able display page, but from the download page it was a new link, again blocked. It wasn't possible to download anything.
Now, after disabling Guard in the Extensions and re-enabling it's working fine.