There are many ways to contact Alothemes:
To purchase a theme, you can click on the shopping cart button for each product. Or you click on the 'All in one' button in the menu bar to buy all the themes.
Yes, we have the installation service.
For your convenience, we have two ways to make the payment that you can free to choose: Credit card or PayPal account.
Yes, we provide Magento customization service.
Yes, Alothemes themes are fully compatible with all extensions by other vendors