​ New player here on xbox, but I'm a Theme Hospital OG.  

I made it past the first hospital quite swiftly although still getting used to new controls, concepts, menus etc.  

I'm currently on the first challenge of upgrading some equipment. Seems easy enough. I see the challenge and it's explained well. I need a janitor who has mechanical skill. I have two who have that skill (I bought a second to see if it would help), so that's great. Next click an upgradable machine and press the upgrade button... Seems easy, but none of the machines (general diag, pharmacy, de-lux) have anything to suggest I can upgrade them. They only have the spanner/health bar. If I try and click on the machine itself it shows a copy of the equipment, turns red and displays a message 'invalid item for room'. If I click/hold then the 'move' bar loads up and the machine is picked up. I can even seem to click repair (I'm assuming you can repair them this way)  

The game is even prompting me that I can upgrade my ez-scan. I have two, and can upgrade neither.  

I feel like I'm missing something obvious. I even watched YouTube videos of upgrading machines, when they click the machine they show something different to what I see.  

I posted on reddit. They suggested I need to level up my hospital and also go back and 3 star the first hospital - I've done both. I've even restarted the second hospital and its the same. I waited so long to get the game and I feel like either there is a glitch or I'm just really stupid. HELP!