I did not use the primary email. I only use the secondary email to see how scam works.
It is advisable to use a VPN as well. I appreciate your positivity in reporting this scam domain related to a Ponzi scheme, and you succeeded in taking it down to prevent potential victims from falling for the fake investment plans and profits they might be enticed by on this scam domain.Looks like a one-man operation. Have to even use Gmail for “support”. 
To calm them down, they send out such emails so that they still have some hope that the site is still operating.
They have a user database and their emails. They now use Gmail to calm the victims' fears after the Kyrptcatalyst domain was taken down to maintain communication with the victims. They then direct them to a new scam domain, claiming that there was maintenance on the old domain.To calm them down, they send out such emails so that they still have some hope that the site is still operating.