sorry but vpn doesn't work

i bought avast vpn one day ago . but vpn doesn’t work on my computer and mobil (android) . i wonder what is the reason of that . may be i couldnt set up regularly. but i am using avast security premium and i am glad . but i am really feel regretfully to buy it . but i think avast support team can be solve this problem. just now thank u

Contact support: https://support.avast.com/contact