@herbshirt For external image storage have a look at Cloudinary. See: Best way to avoid UI ICON Downloads on slow conections - #2 by karimoo
They also have a quite good free quota.
Or https://www.imgix.com/ that is used by Adalo itself. See: A very cool image tip!
Auto numbering is as planned on the roadmap: Additional Database Property Types | Voters | Adalo