Normally you should not have a problem with most browsers except for Safari on an iPad and possibly Internet Explorer. The steps for these cases are detailed below.
iPad users
Open the Settings app.
Click Safari on the left.
Turn off Block Pop-ups
Internet Explorer users
Note: Microsoft recommends using browsers other than Internet Explorer due to vulnerabilities. Other browsers include Chrome, Firefox, and Microsoft Edge.
Popup blocker settings
Open Internet Explorer.
Click Tools and choose Internet Options.
Click the Privacy tab.
Click the "Settings..." button in the Pop-up Blocker area.
Type formsbossweb.com in the "Address of Web site to allow"
Click Add.
Trusted sites settings
Open Internet Explorer.
Click Tools and choose Internet Options.
Click the Privacy tab.
Click the "Settings..." button in the Pop-up Blocker area.
Type formsbossweb.com in the "Address of Web site to allow"
Click Add.
Still not working?
Try restarting your system.
Clear browser cache: click the gear, choose Internet Options, click the Delete button under "Browsing history", check Temporary Internet files and website files, click Delete