Fonts malfunctioning after migration

I just migrated my site from a dev server over to Flywheel hosting. The fonts, which were installed via the GP Font Library, were not working correctly. Flywheel support noticed that the theme was referring to the font files on the old server, so I deleted the fonts and re-added them. But there are still issues – the font weights aren’t working correctly, and

Here’s the original site:
https://merc.perceptionsdev.com/

Here’s the migrated site:
https://massedresource.org/

Here’s a screenshot showing the two side by side (the heavier weight font is the correct one):
https://postimg.cc/MnS0mhbK

And here’s a screenshot of what my client sent me when they try to access:
https://postimg.cc/cgpt4nF4