couldn't verify my location near the campus; my program and current courses are online.

We accept distant learning courses but you need to ensure that you accurately share your browser location and that includes not using a VPN as this will indicate a different location.

I would suggest you resolve the above first before raising a support ticket, but I'll give you the details below.

GitHub's Support documentation states that the option to open a support ticket is only available to accounts using a paid GitHub product or members of organizations using a paid product.

We provide dedicated support for Students and Teachers applying for GitHub Education. You should be able to submit a support ticket here

Adding to @samus-aran's reply, here's what usually gets online and distance students through:

1. Fix the location check before reapplying

Turn off any VPN, proxy, iCloud Private Relay, or browser privacy extension that hides your location.
When the application asks for location access, click Allow. If you blocked it earlier, reset it from the padlock icon in the address bar and reload.
If you're on a work or campus network that routes traffic through another city, try your home connection or phone hotspot instead.

2. Use one document that proves everything
   The camera step takes a single photo, so ask your registrar for an official enrollment verification letter. It should show:

your full name, as on your GitHub profile/billing info;
East Texas A&M University and the current term;
that you're currently enrolled;
ideally, that your program is online / distance learning.

One letter like this is easier for the automated check to read than a student ID, fee bill and schedule squeezed into one shot. Hold it flat, in good light, and fill the frame.

3. If it's rejected again, open an Education ticket
   GitHub Education has its own support form that works on a free account. You don't need a paid plan for it: https://support.github.com/contact/education. Choose the option about your school having incorrect or incomplete information, such as campus location. Say that your doctoral program is fully online and that you can provide the registrar's letter.

Also check that your university email (@leomail.tamuc.edu) is verified under Settings → Emails before you reapply.