cloudflare rocket loader checkout problem

Hi support team,

I am using for speed my site
– autoptimize (according your instructions)
– wp super cache
– cloudflare with the rocket loader option

While the rocket loader option is active, I am facing a issue with rocket loader breaking any javascript especially on check out page.
Screen Video – Problem description > https://www.screencast.com/t/dAre5kAeCpx
Screen shot – freezing paypal page > https://www.screencast.com/t/IJfsq04WOuZy

According cloudflare support instruction, I can
a. either create a limited amount of page rules (not applicable in my case as we will have different language approaches), or
b. exclude that script from loading with rocket loader (How can I have Rocket Loader ignore my script(s) in Automatic Mode?)

However there are so many scripts and I am unable to examine which script I should prevent loading with rocket loader.

It would be helpful if you would help me finding this script. Please note down the script is on checkout page of the website.

Here is the procedure you can go to the checkout page with info :-

Please login to the website : https://www.worldcheckin.com/ with

user name : (stated in private thread)
Password : (stated in private thread)

=> Once logged in, either
a. create a new listing (with paypal sandbox credentials) by using this LINK DE or EN version, or
b. go to the link https://www.worldcheckin.com/gd-invoices/

=> Find a Pay for Invoice option with any bill.

=> Click on the bill and it will redirect you to https://www.worldcheckin.com/gd-checkout/

=> It may ask you to wait for “Please wait for TAX-REDUCTION approval.” or Pay With Tax.

=> Please click on “Pay With Tax” and it will append a option to “Proceed to Paypal” option.

And our page is dieing here after clicking on this option.

Please review and let me know which script should I exclude from rocket loader here so that it would work fine.

Thank you in advance for your help.

BR, Alex