1098-T form problem

Hello! I'm an international master's student filing as a resident due to my time in the country. I get my tuition fully covered through a graduate assistantship. I received some money from my university through their COVID relief fund that came from donations, not the CARES act. Because of this, box 5 on my 1098-T is about $1300 higher than box 1. When I input this form on the system, my tax return of around $500 turns into me having to pay $3000 back in taxes. I'm confused by how I'd have to pay so much more for money I received as COVID relief, even more than I actually got. Any advice on how to fix this problem? When I don't enter this form I get a much higher tax return. Thanks!