Assume that my website offers a service requiring registration and payment - i.e. the service is NOT available by just typing the website address in the browser. Considering this service, I'm wondering if it's fine to update my website T&Cs with:
- immediate effect for new users;
- 30 day delay for existing users (as stipulated in T&Cs themselves).
This would obviously create a period of time when some users are bound by version X and some users are bound by version X+1.
I wonder if there are some (consumer?) laws that specifically prohibit such a duality.
Some reasons why this may be desirable:
- price increase for new users without delay;
- giving access to new features for new users without delay.
I also realize there are significant administrative disadvantages to managing this dual state while it lasts.
Edit:
A (very helpful) answer raised doubt about changing the T&Cs for existing users after the notice period. I should have mentioned: existing users have the option to refuse the change, which would terminate the contract, again, as stipulated in the T&Cs themselves. As far as I'm aware this approach (if existing users refuse, end of contract) is universal for online services. Though this is not the focus of my question: the focus is the legality of the temporary dual state, where some users are on T&Cs version X, and some are on T&Cs version X+1.
Thanks!