1. Technical problem: During the credit card application process, due to technical problems, the signature on the electronic application form may not be completed. This may be caused by network connection problems, browser compatibility problems or system failure of the application platform.
2. Equipment problem: If you use electronic equipment to complete the credit card application, you may not be able to sign the contract normally because of the wrong equipment input settings or equipment hardware problems. This may include keyboard problems, touch screen problems, or mouse problems.
3. Signature skills: Signing requires certain skills and experience. If you are unfamiliar with how to write a signature or lack the flexibility of handwriting, the signature may be incomplete or unqualified.
4. Platform requirements: Weihai Bank may have specific requirements for the signature on the application form, such as specific signature area and signature style. If you don't follow the requirements, you may not be able to complete the signature. If you encounter the problem that you can't complete the signature, I suggest you check whether there are technical or equipment problems, such as confirming the normal network connection and trying to apply with different devices or browsers. In addition, I suggest you contact the customer service department of Weihai Bank, explain the problem, seek their help and guidance, and let them provide more specific reasons and solutions.