Awful orange stains on tiles after using HG mould spray

[OhBuggerandArse]

Would love advice from any cleaning aficionados. I am cleaning up a property that I haven't been living in for a while, and an awful thing has happened. The grout and silicone in the bathroom had been left full of mould by the people who'd been living there, so I took to it with HG mould spray; it's dealt with the mould fine, but has caused some kind of weird chemical reaction on the tiles themselves, presumably reacting with old soap scum or something like that which is dried on to the tiles. Does anyone have any idea of what might help? I've tried bicarb and vinegar, and surgical spirit, and it's had no effect at all. I've ordered 'the pink stuff' some hydrogen peroxide, and on advice from a local tile shop LTP Grout Haze & Limescale Remover - but I've no idea if any of them are likely to work. Do any of you understand what might have happened and/or have any suggestions on how to fix it without retiling the whole bathroom?

Have you tried Jif (CIF) and a kitchen scourer.
If it's limescale you might need to do it with a scraper or flat screwdriver (very carefully)

Haven't tried J/Cif - can add that to the list tomorrow. But I have tried my go-to kitchen cleaner with bleach and a scrubber - no use. I'll try with a blade, but it looks as if it's sunk into the tiles somehow. It happened so fast!

I am certainly no cleaning officionado but I do like the Flash Magic Eraser. It does remarkable things to all sorts of stains so might work here?

Stain Away from Stone Care Direct. That will remove the orange stain, it's not limescale

I stuck ‘HG mould spray turning tiles brown’ into Google and got this - are the tiles old, perhaps?

Oh that is really helpful - thank you all. I have tried the magic eraser, but not the next two suggestions - will add them to my list! The stained tiles are crackle glazed - I'm sure that is part of the issue. They're not old, though.

Good luck - hope you can get it sorted!

My first thought was has it got under the glaze.. hopefully not.

Have recently sealed your crackle glazed tiles?

I wanted some in the bathroom but the need for regular sealing put me off.

Your tiles are gorgeous though!