I've recently moved house and both of the toilet seats in the new house are broken. The toilets are Roca Giralda. I bought a toilet seat after seeing online that most seats fit most toilets and tried to fit it - just an argos one for £18 so should be no problem. The fittings aren't hidden but are really awkward to get to which didn't help but I couldn't get it tight enough at all and it was really wobbly. I thought it might just be a rubbish toilet seat so I bought one on Rinkit with easier fitting for a similar price. This time I got it fitted by a handyman who was coming to do another job in the house - he got it on initially but said it was difficult and a couple of days later it's wobbly again. I can't find anything online about the type of toilet seat I should use for this toilet but wondered if there was a different size or something like that that I needed. I can't afford to buy the official Roca Giralda toilet seats because they're £80 and I need two so this isn't an option. If anyone has any ideas please let me know!
Thanks!