Hi @KarineSalvasSurprenant-4964,
I noticed that you have issues about the signature in Outlook for Android, is it right? If so, I have researched a lot and found some relevant threads, please kindly check if they could be helpful to you:
HTML signature outlook app for Android?
HTML Signatures in Mobile Outlook
If that's invalid, please understand here we mainly focus on general issues on outlook desktop client, in order to resolve your issues better, it's recommended to post your issue in dedicated outlook for android forum, thanks for your understanding and hope your issue would be resolved soon.
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