Unable to buy battle pass?

Long story short, started playing on PS5, but my account is Belgian, used an alt account (UK) to be able to download and play it. This obviously locks me out on PSN because it'll tell me it doesn't exist on the store. Tried to bypass this by linking to my steam account and booting it up through my laptop, but no luck, another error appears saying I can't buy it on this platform and to try another one. What else can I do though? I've unlocked so many levels... I really wanted that dress and the dye, because I dyed a dress, but I'm too poor to actually be able to dye it. Any suggestions?