"Calendar is locked due to account maintenance" "Calendar is currently unavailable" when accessing icloud.com my web browser

This has started to occur over the last 2 weeks. It is not a Microsoft issue, a device issue, a browser issue. Restarting works for an hour then when accessing my calendar again on my desktop I can sometimes access the calendar but when I try to do anything I get this error. OR I cannot access the calendar at all and get this message. I noticed this was addressed on this forum 2 years ago with no answer from Apple. I need my calendar to work. Please do not send me thru a bunch of hoops and try to blame a 3rd party. Apple needs to fix this as I know I am not the only one with this issue.