After enrolling you have unlimited time access to the courses. Should we decide to close the courses, we guarantee a minimum period of 1 year from the announcing day of closing. However, to have the exercises corrected there is a time limit of 4 month for each level from the date we receive the first exercise to be corrected. Normally we send back the exercises corrected within 48 hours and no longer than 4 days. From december 19  to january 12 we do not correct exercises. Should you pass the 4 month limit, you must pay 25 euro for another 4 month period. By payment you accept the conditions and we do not return the money. All units are structured as the free unit.