Yes sure it should be possible to integrate SasaPay into our Fundstarter template using SasaPay APIs and Bubble’s free plugin API Connector:
Please note that for comfortable template customization you have to contain solid Bubble skills. Especially if you are going to change the payment system in the Fundstarter template, you should have a solid understanding of how the API Connector works and examine the template’s structure (where the default payment system is used to replace it peacefully).