When Pay plugin is installed and enabled the modal window from Welcome Box plugin stops working.
Welcome box window cant be closed either by clicking on side of the box nor on X in top right corner.

There is some js errors in the console.

When pay plugin is disabled there is no js errors in console and the welcome box window can be closed both ways as normal.

All updated to latest version.

@piter
it looks like you have some problem in tipped.js script.

That's what the console says.

I checked tipped.js and the payment plugin seems fine.
But in the welcome plugin this file contains strange characters (see attached file).
I'm not sure what this might cause. Maybe the ftp client made the wrong decision as to the type of ascii / binary transfer.

Question 1 - Is tipped.ja the same and common to all plugins? The version used is 4.5.5.
Question 2 - Would it be safe to update all tipped.js files (for all plugins) to their latest version 4.7.0, which is now opensource and available on github?

@piter
Tipped is usually same, you may update reference to cdnjs as example, or reupload it.
But always is best to keep version you have right now, otherwise you should test for it's functionality.