Please check that your growing conditions are similar to those reported for this cell line by the ATCC. I have included a picture (from ATCC) as file attachment that shows how they should look growing in low and high density.
The cells in the images look different like single cell suspension. I followed the ATCC culture condition which is quite simple with DMEM and 10% horse serum. I also tried adding MeEtOH but it didn't change.