We have been able use their API's with our other products like Zapier which gives us more opportunities! They're also very quick in responding when we've had issues or questions so that makes things easier too!! Nothing really! If you are looking into this product I would recommend it because of its benefits but if there were some improvements then maybe people wouldn't look at another solution? More integrations between services/products could be helpful though :) Definitely give them try they do provide amazing support whenever needed through Slack messages etc.,.