Visit FedEx.com, with all filters turned off but Adguard turned on.
Attempt to track 123456789012 with Adguard on. It will display "Unfortunately we are unable to retrieve your tracking results at this time. Please try again later."
Try again with Adguard off and it will work.
Your environment
Adguard version: Latest nightly
Adguard filtering mode: VPN
Device model: (e.g. Google Pixel) Pixel 2016
Operating system and version (e.g. Android 7.1.2) 9
Rooted or not? No
Any other apps that can start VPN/Antiviruses/Cleaners etc. installed? No
Steps to reproduce
Your environment