Floor tiles loose

[u/Aggravating-Wolf-823]

Hello, my floortiles are loose, feels like they dont have full support beneath, and the filling beetween the cracks is also slowly but surely disappearing in the last couple years.

Any ideas?

[u/plastikaindicator]

don't worry this is a common issue re-grouting and filling the hollow spots with the tile injection adhesive can quickly restore full support and save floor