Could you please try running through the solutions here, in case of a more localised issue: https://support.fatshark.se/hc/en-us/articles/360034654113--PC-How-to-Resolve-SIGN-IN-TIMEOUT-COULDNT-CONNECT-CONNECTION-TIMEOUT-COULDNT-RESOLVE-HOST-Errors-
Could you please try running through the solutions here, in case of a more localised issue: https://support.fatshark.se/hc/en-us/articles/360034654113--PC-How-to-Resolve-SIGN-IN-TIMEOUT-COULDNT-CONNECT-CONNECTION-TIMEOUT-COULDNT-RESOLVE-HOST-Errors-