It sounds like your garage door may need some adjustments after replacing the springs. When one side of the door is not level, it typically indicates that the cables or the tracks might need realignment.
First, ensure that the door is completely closed and examine the tracks for any bends or obstructions. If the tracks are clear and straight, the next step is to check the cables. You can adjust the tension on the cables to help level the door. However, this can be tricky and requires some caution since the springs are under tension.
If you're not comfortable making these adjustments yourself, I recommend hiring a licensed garage door technician. They can safely adjust the cables and ensure that the door operates smoothly. The cost for hiring a professional can range from $100 to $300, depending on your location and the complexity of the job.
As a next step, I suggest getting 2-3 local quotes on Handyman.com to find a reliable pro who can assess and fix the issue.
— Assisted answer