Revamp CRM for B2B wholesale

I'm having issues with my app not updating with the most recent information. Customer service won't respond to my inquiries.

BEWARE!!

We were looking for a reliable CRM system, BUT we never even got to trial the app properly as there was too many problems and bugs and the customer service is terrible and non existant (apart from snotty mails).
Since deleting the app we are getting 10 mails per hour and we have requested to be removed from their list but no reply and the harassment continues (no surprise).

Disappointed to have to rate this app one star but when I hooked up the Mailchimp integration (in addition to my store) it duplicated all the contacts from the Mailchimp list, making the application worthless. When I reached out for help, no response. I wish Shopify would do a better job of screening these app developers. Can't use apps that are not adequately supported. It is a shame because the app looks like it is quite robust for the investment.

The plan for this app is very confusing, first its say free plan available then its say 14 days trial version,