Unable to prepare app for distribution (provisioning profile, certificate etc issues)

I have spent hours and hours but can't figure out how to fix it.

In xcode I am getting this error when I am trying to prepare my app for distribution.

Failed to create provisioning profile.
There are no devices registered in your account on the developer website. Select a device run destination to have Xcode register it.

No profiles for 'app.beegle.campus.ios' were found
Xcode couldn't find any iOS App Development provisioning profiles matching 'app.beegle.campus.ios'.

I have tried all various combinations of settings and checked internet, but can't figure out what's going wrong and how to fix it. Tried to create many profiles, certificates etc too in my account. But nothing has worked, and in some cases it is not even letting me create those.

I am on a Macbook Air and want to develop app on simulator for now.

Please help.

I am not much of a techie, so please go easy on jargons. Already I see so many terms (Profile, Certificate, Signing, Identity, Identifier, Project, Team, Distribution/Development, iOS/Apple/Mac, Package, Target, Deployment) and it is all confusing.

Attaching screenshot too.

I suppose you people may want to see whether I have certificates or not, what are the settings etc. So here they are.

Unable to prepare app for distribution (provisioning profile, certificate etc issues)
 
 
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