Please provide all necessary information as written in How to get support quickly
Necessary information
You should provide the following information in your forum post:
- Which router (which model?) are you using?
- Which firmware version is in use?
- How is your router connected to the Internet?
- By cable via the router of your Internet provider? (If yes, which router and which ISP?)
- Via WLAN? (If yes, which network and which encryption?)
- By cell phone? (If yes, which mobile provider?)
- Which DNS server do you use? (The local one of your ISP? AdGuard Home? Another one?)
- Do you use DHCP or static IP addresses?
Ping
Can you reach the Internet? Check the "ping" to the IP address 9.9.9.9
Instructions for Windows, OS X and Linux can be found here 
Test DNS resolution
Does the resolution of domain names work? Check this with the domain gl-inet.com - the answer should be 52.41.190.83.
You are welcome to share the output of this command in your forum post.
Instructions for Windows | Instructions for Linux | Instructions for OS X