really fix it

src/Form/Type/AchatMonnaieAdherentRecurrentFormType.php

@@ -40,7 +40,7 @@ class AchatMonnaieAdherentRecurrentFormType extends AchatMonnaieAdherentFormType
                 'data' => $jourPrelevement,
                 'required' => true,
                 'mapped' => false,
-                'attr' => ['autocomplete' => 'off', 'disabled' => true]
+                'attr' => ['autocomplete' => 'off', 'readonly' => true]
             ])
             ->remove('saveHelloAsso')
             ->remove('save')