It seems like they have some good features, including e-notary, which is key for some types of businesses.
I believe I acted simply like any potential customer:
I registered for their trial (= 3 free documents) and tried to send a document to my friend for signature to test it. It was just a test contract. My friend was then getting email every day about the signature and I could not cancel it unless I would pay for it! He could not refuse on his side as well. So I went ahead and wrote to their support team:
"I've tried your service with trial account and I sent one contract to
see how the service operates.
Now I am unable to cancel the contract without upgrading and I even
don't see the option to cancel my account - and the person gets email
notifications every day! That's really a poor service and it's not the
way to attract new customers."
They replied the same day: "The accounts team will take care of it."
After 10 days (and 10 spam emails to my friend every day) my ticket was closed.
Their reply started with "Email support is not available with all editions, and we do our best to get to every request as quickly as possible based on your edition and SLA agreement." .. along with bunch of "Common FAQs" - all unrelated to my original question.
Right next email was asking for kind words in regards to their service... I don't know whether to take it as a joke or what, but I think it's very clear that they lost a potential customer and I am sure I am not the only one.