1. Please follow this link http://debug.tools.cdn77.com/ and save the full results from the page as text or PDF. Using Google Chrome, you can save the results as a PDF file by pressing CTRL + P (print), select "Save as PDF" in the printer option, and then "Save".
2. Perform a tracert command to cdn.digitalcombatsimulator.com; 1231349722.rsc.cdn77.org; ns1.cdn77.org
How to do that - Hit at the same time Win+R and type CMD, then Enter (OK) in the command prompt copy-paste this: tracert cdn.digitalcombatsimulator.com -> Enter
save the results as a text or screenshot and repeat tracert for all addresses.
3. Create a support ticket https://www.digitalcombatsimulator.com/en/support/ and attach all saved files.
Support team will help you.