Limestone patchy shine after sealing

[Kcb]

Hope someone can help. We've laid new classical flagstone minster tiles. Cleaned and sealed them using Lithofin power clean and multi seal. The tiles are now patchy where shiny on smooth parts and dull on rough parts so floor looks a mess. We know we need to take seal off and start again as the cleaning didn't remove all grout but need some advice as to best sealant or whether we've applied incorrectly (roller used).

 

[Turkish tiler]

have you got some photos ?

 

[Kcb]

Struggling to upload photos from iPad. Think we've found solution have sealed one tile with 4 coats and looks much better.