To block Viber ads (and remove ads panel at the same time) follow these simple steps.
1. Edit your hosts file located at:
C:\Windows\System32\drivers\etc\hosts
2. Add the following entries:
127.0.0.1 ads.viber.com
127.0.0.1 ads.aws.viber.com
127.0.0.1 ads-d.viber.com
127.0.0.1 api.mixpanel.com
127.0.0.1 s-imp.rmp.rakuten.com
127.0.0.1 s-bid.rmp.rakuten.com
127.0.0.1 api.taboola.com
3. Save changes and restart Viber.
Ads panel should be gone.
