EWS option is not available when using flatpak

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1

I installed kontact using flatpak and it installed 5.23.1 (23.04.1).

I went to follow these instructions:
https://userbase.kde.org/Kmail/Configuring_Kmail/Accounts/Office_365

And EWS isn’t an option when adding a custom account. Is this a known limitation of the version available via flathub or is there something else that I’ve done wrong?

Thanks.