How to hide and protect my project code in Designer to other users in server?

[lrose]

Long story short... You can't.

See here for more reading:

Best practice to prevent to stolen ignition resources

OEM lock in previous versions used to provide some amount of obscurity but it’s no longer available in 8.0+. We don’t really have a replacement in the works right now. The truth is there is no way to actually secure your resources. If Ignition can read them, which it must be able to in order to function, then so can any moderately determined or intelligent adversary who has access to your gateway (local filesystem access, not necessarily remote, though it can also be achieved by someone with D…