Getting thousands of registration spam

I use the SI CAPTCHA Anti-Spam Plugin in combination with protecting the Site with Cloudflare. Got rid of 99,9% of the Registrationspam, from over a thousand a day to 1-2 a day.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)