Я написав так, коли офер прислали на 21 день відпуски, після мого листа підняли до 28. - Dear N I hope you're doing well. I'm interested in signing the contract and would like to clarify whether one modification is possible in it, namely the number of vacation days.
Motivation: Of all job offers with an equal compensation that I get so far the number of offered vacation days are between 28 - 31. Also I was given 31 days at my last job. In this regard, I would like to know if you can reconsider the amount of vacations granted. Namely I would like to change it from 21 to 28 days.
Best regards