Sharepoint Online issue with Excel Online

Hi I have problem with excel online on my sharepoint sites. Tested on difrent users and browsers. Can't open with excel online xlsx and xls files

You can see sample here 

https://konto1020551.sharepoint.com/:x:/g/Dzia%C5%82%20Zagraniczny/EayExQ0kQZpPszHAG05AGQUBBSNGLseeKDIpRgqg7rlLFg?e=KpnlW0