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Hi Curtis,
Sorry for my late reply.
Since the issue exists in multiple notebooks and these notebooks are normal notebooks (not Teams notebooks), I would like to suggest you contact your admin and ask him/her to access Admin Center> Health, check whether there are any related service incidents in your tenant. If so, please wait for the repair. If not, please contact your admin to create a support ticket in the Admin Center> Support> New service request. That support team there will have the correct channel to help you investigate more and find what exactly reason has caused this issue.
Appreciate your understanding and patient.
Regards,
George