Or is there a 'trick' with a second 'account panel account' or so?
edit: PS. BTW, the PTR launcher here still launches the Beta installed on another location on the PC. I do not know if that's related to a forcing of using the Beta or the PTR *(i.e. being probably the _same_ thing in assets/engine) though I don't know if a redownloading of an installer would fix it.