Why am I getting an error about unsupported HTML when I try to post an Ad?

Gumtree does not allow HTML in ads posted on the site as some HTML or JavaScript functions can be used for malicious purposes. To ensure our community is protected against this Gumtree does not permit the use of HTML or JavaScript functions.
 

This error can also occur if you compose your Ad in another program and then try to copy and paste it into the Ad contents box. To avoid this error, first paste the Ad's contents into Notepad be sure to remove any HTML links and then copy and paste it from there into the Ad contents box. If you continue to encounter this error and are not pasting into the edit box, then click on "Email Gumtree" link located at the bottom of our help pages and log a ticket as we'd be very happy to help.