Hi @Teresa Nounou ,
Does this issue only happen to this specific Outlook client? To confirm if your issue is related to this specific Outlook client, if possible, it is suggested to add these two problematic email accounts to other Outlook clients and see if the issue could be reproduced as well.
Besides, how did you re-add your email account? Using new Outlook data file or using existed outlook data file?
As I know, Outlook data files are usually the key factor in similar problems. If you are using existed outlook data file, to completely eliminate the factors from your outlook data files, it is suggested for you to try creating and using a new Outlook profile via Control Panel > Mail > Show profile and add these two problematic accounts with new fresh Outlook data file to see if the issue could be resolved.
Any update, please feel free to post back.
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