First of all, you should communicate with other small partners who hold this software. You can't open it here. Ask someone else, and they won't open it. It's not your fault that others can't open it, and neither can everyone, just like there is a power outage at home and everyone has a power outage at home. It's no use worrying. When the official fixes this problem, everyone will naturally be able to use it normally. If others have no problem, it may be your personal problem, which has nothing to do with this official backstage service.
The second is to confirm that it can't be opened, whether it's your mobile phone hardware or your account or the network. Mobile phone hardware problems are easy to check. You must have the account number and password of this stock trading software. No one stipulates that it must be put on the mobile phone. You can find another mobile phone to download this software and log in your account and password again on this mobile phone. If you can, it is your mobile phone hardware problem. To put it bluntly, it is your mobile phone hardware.
Finally, after the above investigation, it is not the official software or the hardware of your mobile phone, and then you can't log in at the other end. That's the problem with your account, because network problems can be ruled out and other people's mobile phones can log in. You can't do this. That's not about the internet. Your account password may be frozen or blocked, but this usually gives some hints that your account will not be blocked directly because you will be frozen.