Hi Merry,could you maybe share some (obfuscated) screenshots of your workflow setup? That would help for troubleshooting.
all together, considering you're a no-code house, a better solution for this would be a Flow I think, but as a first step you might want to find out why it stopped working in the first place...
Great to hear you were able to solve it, Merry!
Workflows and status/status reasons can be tricky at times. Another thing you can do for status updates is using the "Change Status" step in your workflow rather than "Update Record". In the attached screenshot it shows how you can use them separately to prevent a record from being closed (read-only) when you try to update it.
Hope it helps you, or someone, in the future!
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