For complex technical problems encountered on OnlineConvert, we do arrange professional technicians to follow up and solve them. We value the feedback of every user, especially technical issues, because they are the key to improving the quality of our service. When you encounter difficult technical problems, just submit the problem according to our contact information, and our customer service team will make a preliminary assessment and, if necessary, transfer the problem to the corresponding professional technicians for in-depth analysis and processing. These technicians have rich industry experience and expertise, can quickly locate the problem, and provide you with effective solutions. Please rest assured that we will do our best to ensure that your problem is handled promptly and professionally.