Tiffany: Thank you for contacting Porch. When installing vinyl on concrete it is a good idea to use a bonding primer first. A professional vinyl floor installer would generally use a weighted roller at seams. You might try placing something heavy on the offending areas for 24 hours and see if that helps. If not, it may be time to contact a professional flooring contractor. You can use this link to locate a local pro: https://pro.porch.com/near-me/flooring-contractors or call us at 1-855-707-0141 to get started.