These two statements can be found in the ToS:
Your use of the SOFTWARE PRODUCT is solely controlled by this EULA which cannot be changed except by a written agreement executed between you and COMPANY.
Without prejudice to any other of its rights, COMPANY may unilaterally terminate or modify this EULA at any time and for any reason or for no reason, with no notice to you.
So which is it? If some issue arises which is not covered by this ToS, are you or are you not able to change the ToS and come back and say, "See it says so right here."