Installing Synology MailPlus app

I just installed /e/ on my samsung galaxy S7 (helolite). The stable 7.12 andorid version.

Is anyone using this and uses the Synology MailPlus apllication.
I cant install it on my phone. The message: Download Failed. App not supported.
No mather how i Install (download, Aurora etx)
Any sugestions ?

Thanks Koen.

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

Sorry, I cannot explain that fail. I was able to download (from. Apps) install and open. I did not login or attach an account. 4 standard Google trackers included.