Having 2 accounts with the same email

So i have only 1 email account and i cant create a second one because it says the phone number with which i sign up is already used even if i didnt use it anywhere. Soo straight to the subject i have a level 59 account with the email X and today i created another acc to otp {{champion:15}} because on the first one i otp {{champion:84}} . So i used email X on both of these account and riot asked me to confirm the email on both of them and i did. I entered on yahoo and confirmed on both of them. My question is: will i get locked out of any account? Can i use the same email for JUST 2 accounts? I can't make another email account it just doesnt work or have the resources necesary.
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