Recaptcha not installing

Hi support
it’s the first time I make a request concerning Geodirectory and a 3rd-party plugin so I don’t know if I am off topic. If so, please let me know. I hope it’s easy for you to find out and solve the problem.

I have installed WPMUDEV Defender plugin for security scanning, vulnerability reports, safety recommendations and hardening. To harden the site it suggested some urgent actions. I currently have agreed to do these four:
a) Disable trackbacks and pingbacks
b) Disable the file editor
c) Hide error reporting
d) Prevent Information Disclosure.
Now Geodirectory has some problems. So far I found out:

1) When I try to install Recaptcha installation failes! Error message says:
*
Destination folder already exists. /web/htdocs/[site name]/home/wp-content/plugins/geodir_recaptcha/
Plugin install failed.

Fatal error: Cannot use object of type WP_Error as array in /web/htdocs/[site name]/home/wp-content/plugins/wp-defender/app/module/audit-log-module/component/class-wd-core-audit.php on line 200
*

2) All site pages display with no formatting and styling! If I revert action “Prevent PHP execution” they got fine again.

Can you help me?
Thanks a lot
Fabrizio