Hi @Steelu ,
Thank you for reaching out to Q&A forum and welcome to Azure Functions!
The Function app uses the Storage account for logging and storing the source code. Also the function keys are present in the Storage containers. If you look at the storage account associated with the function app, you would containers called "azure-webjobs-hosts" and "azure-webjobs-secrets". The timer trigger uses the storage account to read the cron schedule from a file called status inside the "azure-webjobs-hosts" container, when this file is not reachable/ not present, then you would see the message "Could not create BlobContainerClient for ScheduleMonitor".
You are also seeing "Storage is not configurand properly. Function scaling will be limited" message in the portal which means this is the main reason why the timer is also failing. It appears that the Storage account is either deleted or not properly configured. Please look into this article to resolve the Storage issue.
Feel free to reach out to me if you have any questions or concerns.