In the current Traxsource App version, you are not able to access 'My Traxsource' but you do get the handy 'My Tracks' feed which is equal to that of the full site and mobile site, where you can have full access to 'My Traxsource' and all of its features.
More helpful related articles om 'My Traxsource' here:
How do I access 'My Traxsource'? (Desktop & Mobile Browser)
How do I follow artists and labels?