If your RV shower door spring has unraveled shortly after installation and use, the best course of action is to contact the manufacturer for a resolution. Since the door was installed correctly and the issue occurred under normal use, the manufacturer will typically assess the defect and often provide a replacement. In this case, the manufacturer has agreed to produce a free replacement shower door expected to be ready within a week. Meanwhile, avoid attempting to manually rewind the spring as this may cause further damage. For future concerns, keep records of installation and use, and ensure to follow the manufacturer's maintenance guidelines. If you require further assistance, reach out to your parts supplier or the manufacturer directly to expedite the replacement process.