Google Chrome
Step 1. Click [Preferences....] in [Chrome] on Menubar
Step 2. Navigate [Content Settings] under [Privacy and Security] section.
Or input popup to[ Search setting] field on the top of the window.
Step 3. Click [Popups]
Step 4. Click [Add] on Allow section
Step 5. Input https://go.getshifter.io:443 then click [Add]
Step 6. Confirm and close window
That's all
Firefox
Step 1. Click [Preferences....] in [Firefox] on Menubar
Step 2. Navigate [Privacy & Security]
Step 3. Click [Exceptions...]
Step 4. Input https://go.getshifter.io:443 then click [Allow]
Step 5. Click [Save Changes]
Step 6. Close preferences window.
That's all
Safari
Note: Safari doesn't support unblock pop ups for specific sites. This change will affect for all web sites.
Step 1. Click [Preferences....] in [Safari] on Menubar
Step 2. Navigate [Security]
Step 3. Check off [Block pop-up windows]
Step 4. Close preferences window.
That's all.