Hello @Jaco De Bruyn ,
Thank you for your patience. I think the error is specific to the local settings set in your system, which aligns with the observation made by you above. I did reach out to the product group for Logic App and found out that there were no production issues reported for Logic App in South Africa north region during the period mentioned.
To resolve the issue faced I will suggest that you create a support ticket as it will require a more personalized deep dive into logs and settings. If you do not have a support plan for your Azure subscription id, you can send an email with subject line “Attn:Chaitanya” to AzCommunity[at]Microsoft[dot]com referencing this thread ,Azure subscription ID and your app name. I will follow-up with you as soon as possible.
Apart from this please feel free to comment below if any additional help is required.