Works well, great support, humanistic billing

The Association have a network of 20+ sub-domains sites to offer individual access to sub groups, with another captcha in the formularies. Many of those sites will disappear in an upcoming revamp. I ran into Captcha4WP because the subscribe plugin of webling_ch, our database and accounting software chose it. We were exponentially spammed with fake registration. With Captcha v3 and a 0,6 sensitivity: no more problems.
As we do not use captcha4WP in all the sites, support offered us a good deal that, as the webmaster, I could take without asking for a special budget. Thanks!

Gilbert