Appealing is not a sign of ingratitude. It is an official process that exists precisely because offers do not always fit.
The UPU appeal window for the 2026/2027 session closed on 31 May 2026. The routes below are still open, and the next cycle's dates will be announced on the UPU portal. Source: Kenyataan media KPT, 7 Mei 2026
Whether your appeal will succeed. We hold no appeal outcome data at all, and anyone quoting you odds is guessing.
Write down the target programme's actual entry requirements, then ask the faculty in writing whether a programme transfer is possible after you register, or plan to apply again in the next UPU cycle.
Keep the offer you hold while you find out. Transfer rules differ by institution, so get the answer in writing.