[Bug]: prospect mail shows blank page when trying to connect to my company's Outlook

[AlainKnaff]

Describe the bug
When I try to log in, prospect-mail shows a blank page

To Reproduce
Steps to reproduce the behavior:

1. Launch prospect mail
2. Enter my company mail address: [email protected]

Expected behavior
It should show my company's login page (or provide other means to log in)

Observed behavior
It briefly flashes my company's logo at the left hand corner, and then turns into an all-white page.

Desktop (please complete the following information):

• OS: Debian 12
• Installation source: problem observed both on deb and AppImage
• Version 0.5.2

Additional context
I then also tried setting our Outlook server URL as the mainMailServiceUrl in .config/Prospect\ Mail/settings.json
(I use the same URL that I use in davmail, where it works)

=> in that case, a blank page shows up as soon as launched, without even any logo flashing.

(actually, the reason I want to use prospect_mail is that I want to set up sharing of my Outlook calendar, which is not supported in Outlook Webmail. But now I wonder: is setting up calendar sharing even supported in prospect_mail?)