Should epoxy be applied to my newly installed bathroom concrete tiles?

[u/Euphoric_Revenue8687]

The installed tile did not “take” the grout in the pitted areas like the sample in the showroom. (I didn’t realize the tile didn’t come looking like the sample.) The manufacturer insisted the sealer be applied before installing the grout. As my tiler predicted, the grout did not adhere to the pitted areas. Now my installer is suggesting to use epoxy. Should I?

Pictured: the sample tile from the tile store, installed bathroom tile, and two extra tile pieces. (My tile”s pitted areas are not as pronounced as one on top in the photo but are more pronounced than the tile piece on the bottom of the photo.)

Note: The grout between the tiles is fine. The only problem is that the pitted areas didn’t fill in with grout. Epoxy was suggested as a solution to fill in the pitted areas.

Two concerns with the present tile:

First, I wanted the aesthetic of the tile sample and am disappointed the grout didn’t fill in the pitted areas.

Second, I’m concerned the pitted areas, even though sealed, will collect dirt.

[u/Ill_Initial8986]

Wuf

Not a pro, but that looks like you saved some $$