3 days i cant see my balance, and cant send bitcoin.....
When i deleting my cookies and cashe of browser Firefox it only show per 1 second my balance then showing this message "Something went wrong. Please refresh."
Here is picture

[/url][/img]
Have you tried to disable all your extensions (if you have any) and see if that works?
As an alternative, you can try:
1. Use the mobile app instead of the website.
2. Recover the wallet in Electrum using your seed