can't access the App store on my iPhone

I just downloaded the HondaLink app from the app store and finished inputting the info there. Now I have lost the access to the Apple App store icon on my phone. When I try to access it (there are items I need to update) I get a message saying Cannot Connect - - Something went wrong. Please try again. But trying again gets the same result even after a restart of my phone. Can someone advise how to fix this?