No, Mozilla Firefox Portable is not available for macOS. It is specifically designed for Windows and offers a portable version that doesn’t require installation on the system. Unfortunately, there is no portable version of Firefox for macOS or Linux.

If you’re experiencing issues with Mozilla on a Mac, it’s better to use a PC or laptop running Windows, as the portable version is optimized for that platform. For Mac users, it’s recommended to use the regular version of Firefox or any other supported browser like Safari or Google Chrome for accessing PayPal securely and reliably.

Learn more about PayPal limitation:
https://businessglobalizer.com/blog/paypal-limits-simplified-how-you-can-get-around-the-problem/