Hello,
I created a Trial Tenant in Office 365, created WebSite and try to add the App from the SharePoint Store, but grayed out.
What could be the issue here?
Thanks!
Kind regards,
Milan
Install Nintex Workflow for Office 365 - The App is not supported on your Server.
+1
+17Hi, please search carefully the community before posting new questions 
Your question seems to be a duplicate for: Sorry, this app is not supported on your server. and Cant use nintex workflow on Office 365 (e3 plan trial).
Please, check if any from the above posts resolves your question.
Regards,
Tomasz
+17Hi! Did you solve your problem?
+1Hi Tomasz,
no, I didn't solve it so far.
Tried to craete a SP 2013 Workflow, and saw, that I can't uncheck the option "Block SharePoint 2013 Workflows" in the Central Admin. There are two related Posts at Microsoft, but no solution (Post #1, Post #2), maybe this is why I can't add the NW365 App?
Kind regards.
+6Hi Milan,
Please check this . SharePoint 2013 – Sorry, this app is not supported on your server | SharePoint Development & Ops
We are experiencing this same problem and none of the listen resources have helped in our case.
In settings i do have the behaviour where if i untick
- Block SharePoint 2013 workflows
it is ticked again when i go back in but can't see how to fix that
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