Bad

Features broken English in its messages which it allows you to change to proper English, which it then ignores.

Has a CAPTCHA option where it forces the user to add two 2-digit numbers e.g. 92 + 84. This is complex enough to be really irritating with no option to customise. Even worse still, digging into the code, I discoverd this is ONLY implemented on the client side, meaning it’s stupidly trivial to bypass for bots (tested and confirmed in the browser, I was able to omit the CAPTCHA and still submit the register form). So it’s a terrible user experience for humans with no cost to bots, the worst of both worlds.

It’s not been tested with any recent versions of WordPress and can probably be assumed to be abandoned as a plugin.

Give it a miss, look elsewhere.