Suddenly automatic currency conversion

[tshen]

I have an automatic mounthly payment. 

Payment is in USD. The funding source is a Polish bank card - in USD.

An automatic PAyPal "Convert with PayPal" option was disabled. 

Usually, the operations proceeded as planned, in USD , from my card in USD.

But, today, PayPal tried to charge my card in PLN using the PAyPal rate (+5% to the FX rate). Because of my polish card have an "wrong currency protection", the transaction was declined. Then, Paypal tried to charge the other card, linked to my Paypal. Also in PLN. 
Questions:
1. Why the original charge probe was in PLN?
2. How did PayPal decide, what card to charge, if the default card was declined?
3. Even if the default card was declined, why the second charge probe also was in PLN, not in USD?
4. How to fix this?

[PayPal_Shradha]

Hello @tshen,

Thanks for joining the PayPal Community!

We understand that you have concerns regarding the currency of the payments or funds you are receiving. Kindly reach out to our customer support team to get an understanding of the possible solution to the issue raised. Please reach out to the Support Team during business hours by clicking the Contact option at the bottom of PayPal page. If your unable to login into your PayPal account do reach us via phone and kindly select "Call us as Guest".

Hope this helps you!

Warm Regards,
Shradha