adobe recently upped their requirements for browser security, https://helpx.adobe.com/x-productkb/multi/eol-tls-support.html
and you can still ask for adobe support to "reset" your activation count. it's the only thing they'll do to support an old version like cs6 so ask for nothing else or you'll be sent here.
using a browser that allows popups and cookies, contact adobe support during pst business hours by clicking here, https://helpx.adobe.com/contact.html
click contact us (= cryptic icon in the lower right)

in the chat field, type AGENT
be patient, it can take quite a while to reach a human