@Elene1 No Elene, both you as the host, and the guest are given 14 days to submit a review. The system is automated and after that 14 days the review 'window' is shut and I am afraid, that's it!!
During that 14 day period you and the guest would have had three reminders to post a review and if those reminders have been ignored then no further opportunity is given.
It is an unfortunate part of this hosting platform that so much emphasis is placed on reviews, and it is disappointing when you go to a lot of hard work for a guest and do not get rewarded with a nice review. It has only happened to me on two occasions but many hosts tell of up to a third of guests who don't leave reviews.
Elene, Once a guest leaves you still have message contact with them and when the review period is within a few days of ending if the guest has not left a review I just send a polite little note saying..."We hope you enjoyed being here as much as we enjoyed having you. We hope that you will think of staying with us again next time you come this way. If you haven't already done so it would be wonderful if you just spend a minute to post a line or two in the review window which closes shortly. It means a lot to us to know what our guests think of the way we host, and it also tells other hosts what lovely people they can expect if you book with them....We all win!"
If you strike this problem again Elene try thios approach, it may help.
Cheers.....Rob