What are the reasons for the failure of SMS donation for disabled people in Shandong?

SMS donation for disabled people in Shandong Province failed for the following reasons:

1. When sending a short message, there are spaces before and after the number 1-5, so the donation cannot be made successfully;

2. Insufficient mobile phone balance will lead to unsuccessful donation;

3. A user's monthly donation amount is 50 yuan; Those who donate more than 50 yuan can't donate again this month, but can continue to offer love to the disabled next month.