Can you please give more information about your issue? Namely things like: - what version of Android are you using? - what mail app are you using (I presume it's Outlook but want to confirm)? - does this always happen, or is it recent, or just in a specific circumstance?
I would also suggest choosing the support option from within the Outlook app as that will connect you directly to the product support team, whereas this is a community forum where technical support is not guaranteed.