paypal button pops empty window, in console i can see "popup_open_error_iframe_fallback"

[mar-jusz]

It is now constantly popping up. 
I have now tried the code directly from the code generator and I have the same problem

popup_open_error_iframe_fallback

1. {err: 'n: Can not open popup window - blocked\n at Ie (…owser=false&allowBillingPayments=true:1342:297874', timestamp: '1643594328568', referer: 'www.paypal.com', sdkCorrelationID: 'ab6ee5152268d', sessionID: 'uid_d06996b435_mde6ntc6ndc', …}
1. buttonCorrelationID: "f39806875cd9b"
2. buttonSessionID: "uid_2017030fed_mde6ntg6mjm"
3. clientID: "AU7kiNR1l1c2cCNXTGyicM8JT4GJ6GgpDPtgU5UlLeuz0CWy9UQXjQ9Ym6MVGsHruzPQP6HaE3641mw8"
4. env: "production"
5. err: "n: Can not open popup window - blocked\n at Ie (https://www.paypal.com/smart/buttons?style.label=pay&style.layout=vertical&style.color=silver&style.... long, possibly javascript file content)..."
6. referer: "www.paypal.com"
7. sdkCorrelationID: "ab6ee5152268d"
8. sessionID: "uid_d06996b435_mde6ntc6ndc"
9. time: "1643594328568"
10. timestamp: "1643594328568"
11. token: null
12. user_id: "uid_2017030fed_mde6ntg6mjm"

Grateful for any help with this one! 

[GoldFineArtPrin]

Did you ever manage to fix this? I am getting the same issue and I have no idea why. I am using the "WooCommerce PayPal Payments" plugin with manual API Credentials. Is any of this similar to your setup? 

[Franky1024]

I also had this issue, using the PayPal buttons in a self-made module in JOOMLA 4/5.

In JOOMLA, the solution is to use the "System - HTTP Headers" plugin and set the entry "Cross-Origin-Opener-Policy" to -> "same-origin-allow-popups". After that, all works well.