Why my app store language is Malay?

The region and language settings, to the best of my knowledge, have no effect on this. Are you currently in Malaysia? The App Store is generally in the official language of the country. From what I've gathered from other posts, until recently the Malay Store was in English but has recently been switched to Malay. I do not believe it is possible to change that on the user end.

Here is solution

Step 1: Go to Settings.

Step 2: Tab Store.

Step 3: Tab your Apple ID and then Sign Out.

Step 4: Now Sign In and choose Create New Apple ID (you won't complete this, don't worry).

Step 5: You'll be asked to choose your store (country/region), choose the country which has the language you want the AppStore to be in.

Step 6: Click Next and then Agree.

Step 7: Fill in the information until you're asked to insert your credit card info.

Step 8: When you reach the credit card info, click Cancel and exit the Create New Apple ID section.

Step 9: Go back to Settings and sign in with your actual Apple ID.

Step 10: Open the AppStore.

Read here:

https://discussions.apple.com/thread/4985548?answerId=21838205022#21838205022

Settings/iTunes and App Store tap on ID the change region

That should be settings/iTunes etc/ tap on ID then view then change region

Done...go to setting-international-region format...change region to united state...logout AppStore and re-login...problem solve