@Nefea,
i just tested this again wth vanilla install of elgg 1.8.16 and its works fine. It remembers the public and private keys in the settings. I do not know how you are setting it up - so its difficult for me to guess what is wrong.
Some things you can do are
you can go to the table elgg_private_settings and should be able to see 2 rows with names recaptcha_public_key and recaptcha_private_key
let me know if you need more help in troubleshooting
I've changed the permission for the folder and now it seems to keep the info I type in, and I also got the text "" on the registration page, but nothing else.
I don't know anything about mysql tables but I can se that recaptcha is not in there.
Thank you! It works great!
info@elgg.org
Security issues should be reported to security@elgg.org!
©2014 the Elgg Foundation
Elgg is a registered trademark of Thematic Networks.
Cover image by Raül Utrera is used under Creative Commons license.
Icons by Flaticon and FontAwesome.