If GA4 debug is not working for you, there may be several reasons for that. If GA4 debug is not working for you, there may be several reasons for that.
The first thing you should check is if your browser has any chrome extension that may be interfering with GA4 debug. Some chrome extensions eg ad blockers such as Ghostery are usually the biggest culprits here.
Make sure your ad blockers are off. That is one of the biggest culprits of why this wouldn’t be working.
So next time Google Analytics 4 Debugger is not working for you, be sure to check if your ad blockers are off.