Can Adalo app handle scale? Or is it just for demo/MVP?

Not a lot here yet. Let me give it a try:

Can Adalo apps scale to volume? It works fine with few records, using their internal DB. Given their DB performance limitations, we'd need to connect an external DB, like Airtable. Looks like Adalo has some integration option, but again with volume limits in the API.Β 

Is Adalo just meant for small apps or temporary demo/MVP purposes? Or is there a way to scale with them?Β 

We noticed they don't provide real support (yet) on the paid Pro plan.