If you've just signed up for a new number with ZYM Mobile, you might encounter issues when you register for specific apps. It may take some time for your number to be updated in the global database for OTP delivery.
List of Specific Apps
If you encounter issues, we recommend contacting the app itself to report the OTP issue to them. They might be able to alert their third party OTP vendors they have to solve the problem. Some apps may also be able to solve the issue directly.
Here are a list of apps and their customer service contact:
Report the issue at Facebook > Help Center > Report a Problem.
Contact +65 6655 0005 or email firstname.lastname@example.org to report the issue to customer support.
Report the issue at https://contact.line.me/.
Report the issue at https://help.wechat.com/cgi-bin/newreadtemplate?t=help_center/feedback_form
Contact +65 6643 0555 or email email@example.com report the issue to customer support.
Contact 1800 111 1111
Contact 1800 339 6666
Contact 1800 363 3333
Contact 1800 222 2121 or email firstname.lastname@example.org to report the issue to customer support.
Contact + 65 6225 5225 or email email@example.com to report the issue to customer support.
Standard Chartered Bank
Contact 1800 747 7000 to report the issue to customer support.
Report the issue at https://support.google.com/accounts/troubleshooter/4430955?hl=en