Hi @najaago, welcome!
We have many customers on bluehost so I’m sure it can be made to work.
Sparkle is attempting to ensure the FTP folder where it publishes is what your intended web address is.
The public_html in your web address is probably incorrect, it’s not the address you tell people to go visit I assume? (not sure why it would have worked the first time)
Once you omit that, Sparkle will look for common server side folder locations, then let you navigate the FTP folders to select the correct one.
This second step can fail for a number of reasons, generally it’s because the server has some odd setup (not bluehost’s case as far as I know), or because the domain is being transferred from a different host (so the FTP filesystem doesn’t really match the web side).
Without further details it’s hard to give a suggestion, please share a screenshot of where Sparkle gets stuck (either here or via email at email@example.com) and we’ll take a look.