Paypal Pop up fixes

[ramyakrishnai]

Proposed changes

The Paypal button which should be opened in pop up is being opened in new tab. These changes make the Paypal to open in the pop up all the time instead of new tab.

Type of Change

• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation Update (if none of the other choices apply)

Checklist

• [ ] I have read the CONTRIBUTING doc
• [ ] Linting and tests pass locally with my changes
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)

Further comments