LMSC none of those are BPS = BSPT, and the first one you linked to is BSPP male and BSPT female.
Both sides need to be BSPP. I did check my spares box this evening, but unfortunately I don’t have any of those elbows at all. My recommendation would be, Make up a small list of spare parts you would like (seals, gaskets, temp sensors, etc.. contact Maria at ACS tomorrow and get her to put a kit together.
If it’s small and light Paolos nephew is coming to stay with me for a while, he arrives 21 Feb, he might be able to bring them with him and I can post them to you.
In the interim, you can use the machine as long as you don’t turn on the steam!.
There is this:
https://espresso-solutions.co.uk/modbar-fitting-elbow-1-8-bspp-male-x-female/
or this, which doesn’t look tapered in the photo, so you could ask them.
P.S. I am just guessing they are BSPP fittings on the machine and not metric. I’m also assuming they are not tapered? I just confirmed with Italy this evening, they are BSPP.