HCPH texted me my second dose is available, but there are no available locations in the drop down menu

So I’m freaking out a bit. Last night I got a text from Harris County Public Health saying my next dose is available and I need to schedule it. It wasn’t more than 20 minutes when I noticed the text and went to schedule it but there was nothing available in the drop down menu.

This morning I get the same exact text again, I open the link almost immediately and the same thing happens. No available location to pick from the menu.

So I’m kind of freaking out at the moment. What do I do? I tried to call but their offices are closed. I also tried the vaccine spotter app and I only see available moderna vaccines for my date with Walmart but it doesn’t say if those are second doses or not. If you have experienced something similar please let me know. I’m due for my next dose on the 9th.