Hi @m_sLANDON
Unfortunately if you disable your SIM card in your device it may stop that SIM from working in that device, it may be worth trying a network settings reset.
For iPhone;
Settings > General > Transfer or Reset [Device] > Reset > Reset Network Settings.
For Android;
Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth
Resetting network settings will NOT reset any personal data (Photos, Videos, Contacts etc) only network settings.
If the above doesn’t work, a replacement SIM may be best to try, you’ll be able to pick one up from your local Currys store or we can get in touch and have one delivered within the UK, please let us know if you’d like delivery via DPD.
Tom