Anti-bot Validation - Unknown error

-- url of the page with the problem -- : bridgenz.co.nz/user/register
-- HikaShop version -- : 5.0.0
-- Joomla version -- : 4.3.4
-- PHP version -- : 8.2
-- Browser(s) name and version -- : Firefox
-- Error-message(debug-mod must be tuned on) -- : Anti-bot Validation - Unknown error

Hello, recently a site which has been running Hikashop for years has just started reporting "Anti-bot Validation - Unknown error" when on the User registration page. I have been using the recapcha plugin for Hikashop and it has been working (I think) until recently. I have checked the ReCapcha API Keys and they are valid. I also read that I should configure the recapcha to be after the email and not the address as they is no address fields in the form. This did not make a lot of difference. There was also one other forum post about this but was in French so could not read this.

Any pointers on what to do?

Sorry, I can't find the place on here to download the latest plugin, can you give me a link please?

Hi, I have installed the new version and it now gives me this error - "Anti-bot Validation - Unknown error - Project #23182164519 has been deleted." which I assume to mean that the public and private keys used are no longer available in Google Recapcha API. When I look at the public key saved in the HikaShop ReCaptcha v2 plugin it is 6Lcuj74lAAAAACFVlJMLXu5ttxyaFVqknviBq4fJ

On the Google Recapcha API site, I have previously generated V3 keys which match what is in the plugin. Do I need to use a V2 keys for this plugin? I had previously used V2 recapcahe but bots were getting around this. Google themselves say "We detected that your site is not verifying reCAPTCHA tokens. Please see our developer site for more information." so unsure what is the next step.

thanks, all sorted now with a V2 invisible rtecapcha. Hopefully this will keep the spam registrations at bay