Play Store is not loaded, showing a blank screen instead
Note: this is not a good solution.

I messed around in the account settings of my phone. For some reason, I could not remove my Google account (to re-add it after), but trying to do so seems to have triggered something in the software that got everything working. I believe it had to do with the syncing not working properly as my Gmail and calendar apps weren't working properly either.

So that could be a possible direction in which to search.