1. Please make sure that your mobile phone number is bound to your Aauto Quicker account. If there is no binding, you need to bind your mobile phone number to change your personal signature.
2. Check whether there is an updated version. If you use the old version of Aauto faster, it may lead to the problem that your personal signature cannot be changed. It is recommended to upgrade to the latest version.
3. Please clear the cache and data of the Aauto Quicker application, and then log in to the account again. Sometimes this problem can be solved by clearing the cache and data.