Registration Forms

I’m having problems with the registration page(s) and wonder if you can help as follows –

Buddypress had already created a page called “register”
M2 has created a page called “register-2”

I have changed the settings in M2 to “Use Buddypress Registration” and I have set the register page in Buddypress to “none”.

Not sure which is correct, but I’ve tried setting either “register” or “register-2” as the Registration page in M2 and they look (mostly) OK, however, I’ve noticed a couple of issues as follows –

1) I’ve written a function (to hide a field) which is triggered if ( bp_is_register_page() ) but unfortunately this is bypassed/not recognised when using M2. Is there perhaps a similar check I can do for “is M2 register page” perhaps?

2) With the BP registration form, a warning was triggered if the user entered a “weak password” which doesn’t seem to happen when using M2. I’m wondering if this is possibly related to the above issue (although not a function I’d written myself).

My questions are therefore as follows –

Have I taken the correct steps?
If so, which register page (ie. register.php or register-2.php) should I set as the M2 regisration page?
Any way of resolving the two issues mentioned above (ie. function to identify M2 registration page) so that it behaves in the same way (ie. same appearance/validation/checks) as my BP registration page?

Hope this makes sense and with many thanks in advance.