I can't connect my mobile, with my computer
Which Adobe Product are you using on your mobile and computer?
Provide us more relevant information so that we can help you better. See ASK- Forum Success Guide: Efficiently using the... |Adobe Community
The ability to sync your images across your device is only available with Lightroom CC. Take a look at this article https://helpx.adobe.com/mobile-apps/help/lightroom-mobile-faq.html
Common questions about Lightroom for mobile and Lightroom for Apple TV and let us know if that helps.
And I can upgrade the 6 version on CC version
Lightroom CC is subscription based and you need to subscribe to our Photography plan. See Lightroom and Photoshop | Adobe Creative Cloud Photography plan
You'll get many other apps including Photoshop,Bridge and mobile apps as shown in the screenshot.
Sorry but I have a creative cloud account and also a LR5 version , also with this version I cant connect with my mobile LR version , because in Adobe LR tutorial seems possible
Please create a new Adobe Id for your older Lightroom version as you won't be able to use the Sync functionality with Lightroom 5. See the linked article How to convert a Lightroom CC trial to Lightroom 6
Let us know if that helps.
Adobe lightroom mobile