I run Ransomware Tracker (as well as all other abuse.ch projects) for non-profit in my spare time. As I have a very time-consuming and challenging dayjob, I am usually unable to respond to requests made via email in a timely manner. Depending on the subject of your request, it may take from a couple of hours up to several months until I can provide a response. I'm sorry for this and hope you understand. If you still wish to contact abuse.ch, you can use the contact form.
New submissions for Ransomware Tracker are warmly welcome. You can send new additions to rt-RintANel@abuse.ch (remove all letters in uppercase). Malware binaries that you suspect to be associated with a certain Ransomware family can be send to rt-malwSOareM@abuse.ch (remove all letters in uppercase) for analysis.
You may also want to follow me on Twitter or post questions there: @abuse_ch