Use Signature from Directory

Go to InsideState Directory and search your name.

Click your name.

There is a button "Copy to Clipboard" under Signature.

Always use this for your signature.

Paste Your Signature - Outlook App (Phone & Tablets)

Open the Outlook app on your phone or tablet

Click the three lines in the top left

Click the Settings button

Scroll down to the Mail section and open the Signature section

Paste your signature from InsideState