You can login on any web browser using the following link:
https://iscuela.com/erp/parent/
You can also download the following app for Android Play Store and IOS app store:
Android : https://play.google.com/store/apps/details?id=com.iscuela.parent&pli=1
IOS : https://apps.apple.com/in/app/iscuela-parent/id6446279553
Fee can also be paid online through web browser as well as mobile app.