What should I know about applying for a Covid extension at Satun immigration office in Thailand?

Wife and I just applied for another Covid extension at Satun immigration office. Our current extension ends on April 16th.

We received an under consideration stamp dated _May_ 1st. We were expecting something like April 7th, which would be 15 days from now. We were also told we can come back earlier than May 1st but didn't mention how much earlier. When I asked if April 7th would be ok she said yes. She also told is we would receive Covid extension to June 15th. All good and even easier than in Chiang Mai.