The signature is displayed in plain text format;
The signature images are distorted or incorrectly sized.
These malfunctions are generally due to an incorrect editing format for your message. For your signature to display correctly, it is essential that your emails are sent in HTML.
You can verify whether your message format is indeed HTML when opening a new email.

Enable HTML format on Outlook desktop clientOpen the Outlook application.
Click on File (at the top left), then on Options.
In the left-hand column, click on Mail.
In the Compose messages section, ensure that the format is set to HTML.

Enable HTML format in the new version of Outlook Click on the gear wheel (at the top right) to access the Settings.
Select Mail > Compose and reply.
In the Message format section, choose HTML as the default format.

Enable HTML format on the Outlook OWA web versionLog in to Outlook from your browser.
Click the gear icon at the top right to open Settings.
Go to Mail > Compose and reply.
Make sure that the message format is set to HTML.

In summaryFor your signature to display correctly:
Enable the HTML format in your message composition settings.
Avoid the plain text and rich text formats, which remove styles, images, and links.

If you have any further questions or need additional assistance, please do not hesitate to contact our support team for personalized assistance.