Yes. Having an account is free of charge. It allows the users to use with no fees products which handle a Token. The Token is generated when the user registers and it is individual for each user.
A security of each user is the most essential and only products which have digital signatures guarantee the originality of a product used.
Yes. The Token leads to proper communication between the user and the website.
Limit is a regular number of Calculations which a user can use within 24 hours. Calculation is a unit of the services performed by the website. Its number indicates how many of them the user can use within 24 hours.
Yes, unless a modified programme is used in accordance with its destiny but also for its own (good) use.