1, caused by abnormal WeChat account. There are some abnormal situations in the WeChat account, such as being banned and stolen, so the personalized signature will also be affected and cannot be displayed normally.
2. The WeChat version is too old. The version of WeChat is too low, and there will be some compatibility problems, which will lead to the abnormal display of personalized signatures.
3. It is caused by unstable network connection. If the mobile phone or computer network signal is weak, then WeChat can't get personalized signature information normally, which leads to its failure to display.