[Plugin: FormBuilder] Captcha not working in Formbuilder

I’m having problems with captcha too. I installed V0.852 and the captcha appears as desired in the form but the alphanumerical value never matches and always results in an error.

I suppose I could disable captcha for the moment until this is resolved but I suspect I would receive a lot of spam.

Additionally I tried the spam blocker option but the field is visible on the form and not hidden to my visitors as indicated in your documentation.