bug fixed

src/Controller/UserAdherentController.php

@@ -238,7 +238,7 @@ class UserAdherentController extends FluxController
             $data = $form->getData();
             $plainCode = $data->getPaymentCode();
 
-            if (is_numeric($plainCode) && strlen($plainCode) >= 4 && strlen($plainCode) <= 8) {
+            if (ctype_digit($plainCode) && strlen($plainCode) >= 4 && strlen($plainCode) <= 8) {
                 $encoded = crypt($plainCode, $this->getUser()->getSalt());
 
                 $adherent->setPaymentCode($encoded);