Translated by google:
>>Connection issues
Hi there, my AirPods Max won't connect to my iPhone. Even after performing a forced restart, no device detects them; the amber light turns on, but the white light doesn't flash, so they don't show up as available to connect.<<
If the force restart did not work, did you also try to set them back to factory settings?
Si el reinicio forzado no funcionó, ¿también intentaste restablecerlos a la configuración de fábrica?
How to reset your AirPods Max - Apple Support
Cómo restablecer los AirPods Max - Soporte técnico de Apple (ES)
Did you know that there is also a Spanish speaking Apple Community?
You might get more answers in these forums from native speakers.
Comunidad de soporte de Apple oficial