So you get stuck looking at the loading background image, but without the text that says it’s loading? Or is the text there, but doesn’t progress?
Could you please send a screenshot of what you see when you get stuck?
Either way, try to go to Empyrion - Galactic Survival\Saves\Cache and find the “HWS+ RE EU 0.5” folder. Inside that, delete the “SharedData” and “Playfields” folders.
Then try again to log in, and let us know if it works.