Plank vinyl flooring , the glue will not dry
I'm going to bet that you used a "mastic" based tile setting adhesive, which would have been the wrong type for a kitchen. Mastic is an organic compound (from a Mastic tree) and will re-liquefy with moisture. not only is it bad for kitchens and bathrooms, but if the concrete was not sealed, moisture can come up from below and continually re-liquefy your mastic, even if it has dried. If it was mastic based, you may need to pull everything up, clean it off and reapply with a waterproof acrylic based tile compound.