My lawyer emailed me with the codes about an hour after I posted that, so perhaps you’re right 
And my process number is 2026/22XXX which seems like it was issued earlier than others who received them a few weeks ago.
Correct me if I’m wrong, but I haven’t read that any of the April applicants have actually received process numbers and codes, just submission numbers and ‘finalizado’ emails. The only people who have confirmed codes are those with late 2025 submissions. But if IRN is doing this in batches, they might get them soon.