I am unable to update the new version of Advanced Custom Fields PRO available 5.8.0.
When ever I try to update, it gives an error: Sorry, you are not allowed to access this page.
Because it is a bundled plugin you can't update it directly. In this case you only need to remove ACF pro plugin and re-install it from the same message on top.
I accidently deleted the latest version of this plugin.. and now everything is wrong on my website.. How to install the plugin back
Go to the plugins page and you will see a message on top: http://prntscr.com/npwt1r just click begin installing and click install ACF Pro, you will see a page similar to this: http://prntscr.com/npwt6p