Lightroom Mac and Iphone connection failed

Hello @sayed36560434dvpm 

If are signed in with the subscribed account on your computer and see no premium service, I wonder...
Did you subscribe on a mobile device?  If so, that's a Lightroom Mobile Premium subscription that will work on all iOS and Android devices and any web browser at lightroom.adobe.com.  If you need Lightroom on Mac or Windows, you can find plans that include those plus mobile at https://www.adobe.com/creativecloud/photography/compare-plans.html  

Please cancel your mobile plan if you do start a desktop+mobile subscription.

Two accounts? It will only work if you log in on both places using the exact same account. Note that you will lose all your images on the iPhone if you log onto another account there.