Is captcha feature working ?

[serge-web54]

hello,

I migrate a site in j5.4.2 and last vm
Captcha when registering had some issues, and I disabled google recaptcha form the site. I have tested other captchas, and now it works in joomla but when i activate the captcha feature in virtuemart I have a field above the captcha containing : dynamic_recaptcha_1
and it does not work.
how can I have a working captcha during vm registration ?

Thanks

[jflash]

I also updated the site from J3 to J5.4.2 and didn't find any Captcha plugin that works