FNB and online banking and login

In the four months, I have been with FNB this is the second time I had to resort to this. I signed up for there online banking in order to use my PayPal account for no other reason. When we started this whole endeavor of having to use FNB for PayPal we had an extremely hard time sorting out PayPal and FNB. So the results were hello peter. And now not even five months down the road of my walk with FNB here I am again. As a result of the fact that I only use the account to withdraw money from PayPal I do not use it a lot, now every time I sign into online banking on my computer they tell me my login credentials are invalid. So, as a result, every time I sign into FNB online banking I have to choose a new password. Now my account is locked apparently. So now they asked me to put in my e-mail, which I did and they will send me a reset password to my e-mail. Which they have not done yet. The app on my phone is working but every time there are certain things I want to be checked they tell me I cannot because the device I'm using is invalid. So I ask you, how many passwords must I still choose, the first one I chose was easy to remember, from there on out I had to make up passwords all along the way and it must have nothing to do with the first password and has to have so many capital letters and so many other symbols and numbers and whatnot. This is getting extremely frustrated as most of the time I want to use online banking I cannot get anywhere, because FNB has no trouble remembering the passwords that were used. but apparently there is trouble remebering my current password and login.