I just solved this, about a minute ago"
> Login to your CWP
> Go to PHP Version Switcher
> Select your php version and click next
> In the Advance Configuration Text field add at the bottom:
--with-pspell
Dont forget to enable imap (not necessary but is important if you were running mail before)
> click Start Complier in the Background
this will take about 8-9 minutes to complete, when finish you should have pspell