Hi Guys, I am new with unity and has uncertainties

first i would like to know if i can sell games created with unity free version? (i saw this question before and know i can't find it (forgot the answer)).

second (if i can sell them )i would like to know how can i turn off/ disable pro version features so that i won't accidentally use them and sell it to the public with features of the pro version, where i am using free version of unity (free license)?

Thanks in advance