Facebook will not re-install. Messenger on the other hand, will. (iPhone)?

I deleted the Facebook (and messenger) apps due to lack of storage. After I had cleared enough storage, I attempted to re-install both apps. Messenger

I deleted the Facebook (and messenger) apps due to lack of storage. After I had cleared enough storage, I attempted to re-install both apps. Messenger downloaded with no problem.. however, when I pressed the download button for facebook, it came up with a message saying "THIS UPDATE IS TEMPORARILY UNAVAILABLE. PLEASE TRY AGAIN LATER" I have attempted a 3 day wait before re-downloading and turning my phone off and on again, but it still comes up with the same message? WHAT CAN I DO????
[THIS IS ON AN IPHONE]

or:I deleted the Facebook (and messenger) apps due to lack of storage. After I had cleared enough storage, I attempted to re-install both apps. Messenger downloaded with no problem.. however, when I pressed the download button for facebook, it came up with a message saying \"THIS UPDATE IS TEMPORARILY UNAVAILABLE. PLEASE TRY AGAIN LATER\" I have attempted a 3 day wait before re-downloading and turning my phone off and on again, but it still comes up with the same message? WHAT CAN I DO????[THIS IS ON AN IPHONE]

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