Does not work with WordPress Version 4.9.6 and WooCommerce Version 3.4.2

Hi,

I tried your WooCommerce Installment plugin on WordPress 4.9.6 with WooCommerce Version 3.4.2. But it does not Work. There are two major problems.

#1 On updating Installment slab, it merge to a single line. https://prntscr.com/jtwz44
#2 Payment Gateway goes to infinite load. https://prntscr.com/jtwzbu

I can share development environment details if required.

Thanks