Signup Page Customization Strange Problem

RouterOS The User Manager
1

Hello ppl,

I have setup a free hotspot on RB1100 (6.39.1) with usermanager
for registration.

Everything is working OK.

In signup page I want in e-mail field to allow
only lowercase letters and some other characters like “@”, “-”, “.”
I have tried using :

  1. style=“text-transform: lowercase;”
  2. pattern="[a-z0-9@.-]
  3. Functions with javascripts

but nothing none worked.

For example If I write a capital letter I see it as lowercase because of the rule
(style=“text-transform: lowercase;”) in html
but in usermanager database its get imported as capital…

If I open the html in my PC everything is working OK but inside mikrotik not.

Any ideas plz

Thanks