Sometimes we have seen the WordPress captcha appear over and over again despite typing the correct code, preventing access to the administration page.
This happens because some of the files intended to manage this feature have been damaged.
To repair them, please execute the following commands:
echo -n > /opt/pyxsoft/data/greylist.txt
echo -n > /opt/pyxsoft/data/bfattempts.txt
echo -n > /opt/pyxsoft/data/domainslocked.txt
After this, the captcha should work correctly again.