[Help] Transform View component with UI

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Dear Community,

I have a card game with 50 cards. Whenever a client drags around a card I want the others to witness that on their machine. Thats why I used the ‘PhotonView‘ component and had it observe a ‘Photon Transform View' component. The observe option I set to "unreliable on change".
Indeed did I see the cards moving for all clients. However all cards are UI objects. So their parent canvas keeps messing with my position. When I have one client with a different resolution than another (for example a built game in 1600*1200 and my Unity Editor with a resolution of 1200*900) the positions sent to all other clients when moving a card get messed up. Is there a way to prohibit that, while using Photons Transform View component? Or do I need to write my own? I was afraid to do so, because on the photon webpage in the tutorial it says; that would be a highly complicated endeavor and should not be taken lightly. I myself am a beginner in both Unity and Photon though.

I would be very grateful for any support on the matter.
Thank you.