-snip-
Have you even checked yet in SHUFFLE?
As long you not being verification yets level 2, usually the level 1 data still can be change. Shuffle have ability to change or update the information of level 1, and with condition off course still not being verified yets for level 2.
Just go to the setting, and check by your self.
You are absolutely right, there is still an option to change our information on level 1 verification so there will be no issue for the level 2 verification if we made a typo on the level 1 information.
I'm sure most casinos allow us to change our personal data information before we jump into higher level verification, even if there is no direct option like what is available in shuffle but I believe most casinos can do it by contacting support.