Question about scheduling an appointment on the eVisa site

[Kamahl 0]

Hello! I have a question about scheduling an appointment on the eVisa site.  I am trying to get married in Egypt to my fiance and the first criteria is setting up an appointment with the US Embassy in order to get a marriage affidavit.  Unfortunately there are no appointments available.  Many of the days are in blue signifying they are booked, but a lot are also grey, signifying they haven't been opened up.  For reference this is the scheduling site: https://evisaforms.state.gov/acs/default.asp?postcode=CRO&appcode=1

 

I contacted the embassy via. email asking them when the site gets updated or how it's determined if a day is opened up, but aside from automated email response and one actual response of "keep checking the site" they haven't been helpful.  I even had my fiance visit the US embassy to see if they can offer any insight as to when a date opens up, but they just referred her to the email address I had already contacted.  

 

Does anyone know when these grey dates are opened up?  I read on other threads here that they open up appointments a few months in advance, but some of these grey dates are within this and next month.  As an example here is what August shows:

 

As you can see there are a few dates at the end of the month, but I am not sure if or when they open up.  Do I just have to keep checking daily or are these blocked out because of other reasons?  September has only 2 grey dates and the rest blue.  I have all the documents that are required to perform the rest of the steps for a civil marriage in Egypt, the only thing I am missing is this one affidavit which it seems I can only get from this embassy.  Any help is appreciated!  

Edited August 10, 2021 by Kamahl