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[WOOCS LABS] PDF Invoices & Packing Slips PRO Credit notes issue

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The support doesn work on Saturdays and Sundays, so some Friday requests can be answered on Monday.


I would like to report a compatibility issue with WooCommerce PDF Invoices & Packing Slips Pro. 

If I want to make a Credit note in other than primary currency, an error occurs (JS alert saying kind of"Invalid refund amount") and Credit note is not made. With primary currency, Credit note works like a charm.

I wrote to PDF Invoices & Packing Slips support and I was told issue is WOOCS related. When deactivating WOOCS, everything works just fine.

In the future, we would like to use WOOCS pro, but without functional Credit notes, we wont be able using functions we paid for.

In case you would agree to solve this issue, I can provide you an access to admin or everything else you would need.

Thanks a bunch for your reply!


Surre! Can you describe in more detail the steps to reproduce this error?


I do apologise for a late answer. First, to reproduce an error, you need to use plugin WooCommerce PDF Invoices & Packing Slips Pro version (paid). In Woocommerce -> Orders, you click on an order paid in EUR (to show it's details). Next, just click the Refund button (button in red oval). Then, weird stuff happens when trying to make a refund. CZK orders are just fine.

For further information about refunding, please see plugin documentation here:

If you don't have a Pro version of mentioned plugin, I can make you access to administration. It's just testing version, so you can do whatever you need. Just give me an email to create an account.

Thanks for help.



If you don't have a Pro version of mentioned plugin, I can make you access to administration.  - Great!  and add FTP access( -> ).  My  email  in private data

I will add this plugin to the adaptation queue


I provided information you asked me for. Please let me know if you need further information. Thanks!


OK!  I added the plugin to the adaptation queue

I will write to you as soon as we get the result


Please  do a  test

I made it to the last step with no problem -


I did a test and problem remains the same as before. In screenshot you sent, you should click"ok" when"Are you sure" alert shows. Then, another alert shows, saying"Invalid refund amount". Then the problem I'm trying to describe occurs.


Ok!  I thought this was the first step. And I did not do the test further because I thought then you would have to return real money to the user

I  will  check  it

Ok. I did  a test  - i don't see any error - added  video  to private data

Thanks for a reply, which helped me to figure it out. In the video, you typed 0,01 EUR to be refunded, but actually 1 EUR was refunded. I tried to reproduce this behaviour, and the same happened. I had to type 0,5 EUR into input, to refund 50 EUR. So, it looks that input value shows 100 times smaller number than really refunded.


Ok i will check it on friday


this is not a conflict with WooCommerce PDF Invoices & Packing Slips Pro. 

I  hanged some code in the plugin.  Please  do  a test

My  test -


I did a few tests and everything works just fine! Does it mean problem is solved for every website or is it just local solution? Do I need to do something to implement fix on another domain or is it done for good? Thanks a lot for your help!


In  file  - \wp-content\plugins\woocommerce-currency-switcher\index.php - delete/comment this  code -

Thanks, everythig works well :) In case I would like to update this plugin, do I need to comment this line again after update?


At the moment, yes. But our developer will do a more detailed study of this


Can you drop me initialization file of this third party plugin? This is needed to make the default adaptation.


sure, no problem. But I don't know, what do you need me to do. Can you provide me further information? Thanks!


There is a main file in the folder of this WooCommerce PDF Invoices & Packing Slips Pro, with the help of this file all the functionality is launched.  It is usually called index.php or repeats the name of the plugin folder

please  drop me  this  file