Toilet seat needs tightening

[ChrisH]

I have a Egesermix toilet and the seat has come loose, as it’s an all in one system I don’t have access to tighten the bolts. Any advice on how to fix it would be greatly appreciated. I’ve attached a photo if that helps identify the problem.

 

[rpm]

Please check your spelling of the toilet or supply a link as the photo isn`t showing this end. Hoping you don`t have to remove the whole thing just for this.