Persona plus toobar in firefox installs searc hijacker

After installing persona plus, my search is hijacked and eliminates accessing Google or other search engines with ccs.infospace.com, which seems to be unreachable. This is unacceptable in an add-on for Firefox, and eliminates any possible usage of persona plus.
The only solution I have found is to remove persona plus completely. A former user does not thank persona plus for this.

Where did you download Personas Plus from?

Mozilla add-on site, with Firefox. Three times, in case the first was
just a corruption. All did the same until I ran a malware scanner and
deleted it. Will never install it again.

Inquiries on the net reveal ccs.infospace.com to be a highjack search
installed by some vendors – I don’t know why – and recommendations are
to remove it and/or the offending program that installed it.

Thanks for the prompt response. lee h. mccormack

This add-on is maintained by the Mozilla Add-ons team. I can assure you, if you downloaded from https://addons.mozilla.org/en-US/editors/review/personas-plus it does not contain any such features you mentioned.