Intermittent blocking / security warnings for certain web tools across networks

Hi all,

I’m running into a somewhat concerning issue and wanted to check if anyone else has seen similar behavior.

While testing a few online tools, I noticed that one particular site:
https://bratgeneratorapp.net/

works perfectly fine on some networks (like home/mobile data), but on other networks (especially office or filtered WiFi), it either doesn’t load properly or occasionally triggers security warnings / partial blocking.

What makes this confusing:

What makes this confusing:

• The site loads normally on direct connections
• No obvious malware or suspicious behavior when tested
• Issue only appears on certain networks (possibly filtered environments)
• Sometimes only parts of the page load, while other elements fail

This made me wonder if this could be related to:

• DNS filtering or categorization issues
• CDN or script-level blocking
• SSL / certificate trust inconsistencies
• Or something like network-level content inspection

Has anyone dealt with similar inconsistent behavior where a site works fine in one environment but gets partially blocked or flagged in another?

Any suggestions on how to properly diagnose this from a user perspective would be really helpful.