I could not upload an image in my post or profile setting and it took few days to resolve the issue. I tried posting here, but whit no response so I finality contacted technical support on Splinterlands Discord and I was able to resolve the issue.
They advice me to:
- Clear cache
- Change Browser
- Change Hive Node
- Go to peakd.com and try upload there
After clearing my cache in browser (I use Brave), I was able to successfully upload images, as you can see here. I hope this post helps someone with similar issue.