Why are there no available appointment slots for a marriage visa at immigration in Thailand?

Hi everyone, just a quick question.

Has anyone else had any issues with booking an appointment at immigration?

The website is showing that there are no available slots for my marriage visa this month or next month! (That’s as far as the online booking calendar goes)

In the ten years of booking appointments, I’ve never had a problem with choosing a time slot on a specific day, let alone having no available days at all.

Just wondering whether anyone knows anything.

Thanks in advance