RetroAchievements thumbnails no longer displayed

[randyaristiawan]

Hello,

Previously RetroAchievements thumbnails were displayed correctly in NetherSX2.
After resetting the RetroAchievements authentication token and switching accounts,
thumbnails no longer appear.

Achievements still unlock correctly, but thumbnail images are missing.

Tested versions:

• NetherSX2 v2.1 (stable)
• NetherSX2 v2.2 (dev build)

Additional notes:

• RetroAchievements website displays thumbnails correctly
• Dolphin Android still displays RetroAchievements thumbnails
• Reinstalling NetherSX2 and logging in again does not restore thumbnails

This may be related to RetroAchievements thumbnail fetching,
cache handling, or API compatibility.

Thank you for your work.