PWA main page broken after embeding PowerBI report

Hi community,

I have tried to embed a Power BI report on the main page of the PWA. It worked in the first instance, but recently I couldn't sign in anymore to the report embeded in the PWA so i tried to re-embed the report. 

The link for the main page of the PWA is:  https://OurCompany.sharepoint.com/sites/pwa/default.aspx

1. I went to the main page and went under "Settings" --> "Edit page"
2. I deleted the existing Web part containg the previously embeded Power BI report
3. I added a new Web part "Media Content" --> "Content editor" 
4. I inserted the link of the Power BI report in the Web part. The link has been copied from the Power BI report in the service as "File" --> "Embed report" --> "Web site or portal"

Since this has been done, the main page of the PWA is broken. When i go to https://OurCompany.sharepoint.com/sites/pwa/default.aspx the link in the browser turns into 

https://OurCompany.com/sites/pwa/default.aspx?disablecdnExpiration=1700065815 while the last two numbers of the link are changing continously in a loop and the site seems to be updating itself continously in this loop. The issue is, I cannot access anymore the "Edit page" site of this site in order to delete the Web part again which has caused the issue. When I go to "Edit page" a blank site with the message "404 NOT FOUND" appears. 

Any help is much appreciated.

Thanks in advance

Best regards