Hello, I am not sure whether I understand well, but I think you can use a third-party tool to remove your wrong-added watermark and then stamp the watermark on the place you like. Here I recommend Easepaint Watermark Expert, it supports add or remove watermark from photos, maybe you can have a try.
Hello, I think you can just use a watermark remove tool, I recommend EasePaint Watermark Expert. It supports bulk-adding watermark, and it’s user-friendly and free to use. So maybe you can just have a try.