Thank you, we also believe it has potential. And we're doing our best to make it work as soon as possible because we don't want to work for some corporation. And we're pretty much running out of money and time.
We designed our own system to fetch and update data from sources. The system is easily extensible with new integrations.
you can give this a try https://docs.airbyte.io/integrations for integrations it is open source, it will save you some effort on integration and you would be able to provide wider range of sources out of the box.
I’m a little biased here as one of the co-founders, but hotglue is meant to help companies like yours get data in from your customers! Feel free to give us a look at https://hotglue.xyz - happy to answer any questions you have about integrations in general as well.