How does the grace period work for the "120 Days to the Max" credit card?

The grace period for the "120 Days to the Max" credit card is granted for a period of 4 months, where:

• The first three months are the period during which you spend funds using the granted credit limit. At the end of each month, a minimum payment will be generated for you, which must be paid by the last business day of the following month.
• The fourth month is the month when you need to repay the entire remaining amount in full.     

You can ознакомиться with the list of transactions that are not covered by the grace period by following the link. 

Summary: in order for the grace period to remain in effect, you must pay the minimum payments every month and pay the remaining part of the debt in the last month.