Are you using reCAPTCHA version 2 or 3? In case its V3, you can check the “Error Logs” tab if it returns a very low score like 0.1.
You may also try “Cloudflare Turnstile” instead of reCAPTCHA.
You will need to provide site and secret keys for Turnstile in “Captcha Settings” > “Cloudflare Turnstile”. Then, under “Enable Captcha” setting, select “Cloudflare Turnstile”.
I tried V2 and V3. Both have the same issue and don’t let me login if I am not already logged in. The errors log mention timeout-or-duplicate for both v2 and v3.
If it started to happen just recently, then you can try to regenerate reCAPTCHA keys for V2 and V3.
You may also try Cloudflare Turnstile instead.
Hello!
I tried a plugin I was willing to try on my site (have used it in another sites before) to change the login page to a more theme-suited look. Meanwhile I tried Cloudflare too. Both methods seem to help, and I made sure I tried them both individually.
I also regenerated a new key by deleting the site in Google Captcha, and creating a site again, but that made no change, the errors logging in kept going.
So I guess problem is solved, either way.
Many thanks!