Today I upgraded my routeros to the latest stable 6.47.4 then I was trying to install hotpsot package by uploading the hotspot-6.47.4-mipsbe.npk to the router (using the files menu) and rebooted the router. After reboot, the menu IP on winbox does have no Hotspot entry. The files shows no sign of the hotspot npk nor any other folder or file created from it.

Well I was trying to remake the install and the Log has entry: omitting package hotspot : it is already installed.

My routerboard model is 2011UiAS-2HnD

Please check the /system package menu, the package may be installed, but disabled.