Those glue spots that you were able to remove will most likely be back in a few weeks.
One of my customers, a pest control company, had his employees install those same exact tiles and had the same issue with the glue coming up through the seams.
They made several attempts in small areas before calling me. I found with citrus gel and high heat, lots of flushing I could get them out but over time those spots were still sticky enough to attract soil prematurely.
I cleaned for them quarterly till they moved to a new building. It did improve some with each cleaning but they did continue to come back.