"You're using a adblock!" shows up even if i turn off my adblock

I am using a adblock with my Firefox browser. When i entered Aternos, the message "You're using a adblock!" showed up on the screen every time i did something. Then i turned off my adblock. But, even doing this, the message keeps appearing. Then i looked for help and the support page said to turn off Enhanced Tracking Protection on Aternos. Ok, i turned it off, but the message still appears. I then tried everything: disabling my antivirus, firewall, changing network connection, but it still doesn't stop appearing on my screen E V E R Y time i do something. Please can someone help me? Here are some prints:

update: i found out the problem is something on my computer, because on my sister's computer it works fine. but i still don't know the problem, can someone help me?

no, i don't see them

Quote from AlexanderSniper1

Then, something is blocking your ads. You should check this https://support.aternos.org/hc…ou-are-using-an-adblocker

I already checked it

Quote from Kurt

Make sure that

• You don't have any browser addons installed that could block ads or modify the content of websites
• You don't have any ad blocking software installed on your computer (e.g. AdGuard or antivirus software that also blocks ads)
• There is no network filter installed in your home network

I tried everything:i disabled my firewall, my antivirus, and it still doesn't work

Quote from Kurt

Did you check if there's a network filter installed in your home network?

What happens if you try to open this URL? https://securepubads.g.doubleclick.net/tag/js/gpt.js

It says "Server not found"
and i think there's not a network filter, because the ads show up on my sister's computer

Yes, it works, It shows a lot of code in Java Script.
Print:

yeah strange