Fetion problem; When Fetion is not posted, others use Fetion to send short messages, and no information can be received on the mobile phone. What is the reason?

According to my long-term experience in using Fetion, I can't receive Fetion messages for the following reasons:

1, Fetion setting is incorrect. The landlord logs into the computer Fetion, and the personal nickname at the top of the main interface has a drop-down button at the bottom right. Click the drop-down button and make sure "Receive SMS/MMS" is checked before you can receive other people's Fetion messages.

2. The status of the landlord's mobile phone is abnormal, whether the mobile phone is in arrears, and whether the signal is bad.

3. The landlord's mobile phone is equipped with a short message shielding screen software to shield Fetion short messages. The landlord can change a friend's mobile phone to test it.

Please confirm the above possibilities.