If you can't connect to MyRepublic network in Singapore, here's what you can do:
1. Manually re-select your network
If you can't connect to a cellular network on your phone, make sure that you are connected to the correct service provider.
How to: Go to Settings > Network Selection > set to automatic or select "MyRepublic" manually
2. Reset your Network settings
How to: Go to Settings > General > Reset > Reset Network Setting
Note: By doing this, it will also reset your Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before. Guide to our APN settings can be found here
If your connection still doesn't work and you will need some further help, you can contact our 24/7 technical support at +65 6717 1680 (press option 1 for mobile and 5 for technical support).