Subscription report

Hi,Zemotard .I am glad to help you.
like this?
When I click on My subscriptions in the report server, the result is the same as yours, after clicking on it, a series of subscription actions are greyed out and unclickable.

This is not an issue, in fact this is a subscription list management screen where you manage all previously created paginated reports subscription plans (provided you have a subscription that has been successfully set up in the first place).
When none of the paginated reports subscription plans exist in the list, you are in the situation you are in now!

Recommendation:
You need to set up a subscription for one of the paginated reports first.
Like this:

Ensure that data source credentials for paginated reports are configured correctly

Click to subscriptions.

Destination selects E-Mail (you mention that you have successfully configured SMTP)

After successful creation, select the target subscription and click Run now to test!
You need to ensure that the SQL Server Agent is running.

After waiting for the subscription to complete, you can see the final result of the subscription you just set up (success or failure).

So the most important reason is that you currently need to click on a paginated reports and create a subscription plan for it before you can plan for it on the page you are displaying (In My subscriptions).

I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Carson Jian,
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