Ah, yes. From personal experience, @Ziddy, I suspect that you might have been logged in to the Disney+ website or app already. When this happens, it's typical that a site will bypass the redemption page.
A useful step is to uninstall the aforementioned app on your phone (i.e. the device that is eligible for the offer and from which you're claiming) and also to ensure that you're signed out of Disney+ on any mobile browsers you are using on the phone (crucially, the one to which you're directed after clicking Redeem).
After you have logged out of your Disney+ account, please click on Redeem again. I believe you will see a redemption page, where you can paste the code. After doing this, you will be prompted to sign in to your account (or to register a new account).
Once you have redeemed the code and signed in, you can then install the app again and sign in to enjoy the subscription.
Please let me know whether this helps.
You're welcome. Yes, certainly. After clicking on the Contact page, please choose Technical product support (page one), Mobile Devices (on the next page), Smartphones (on the following page), then choose your preferred contact option.
If you're going to be reaching out to a text-based Support Team (e.g. Live Chat, or the Social Media Team), I'd recommend capturing screenshots and/or a screen recording showing what happens when you try to claim your Boost. It will likely speed things along for you, especially if it captures the claims experience:
https://www.samsung.com/uk/support/mobile-devices/record-and-capture-your-galaxy-phone-screen/
and
Please keep us updated.
I did what you suggested, took screenshots, and went for chat support this morning.
I got as far as:
Yes, I want to connect to a Samsung Support Expert.
I waited for 30 minutes, but didn’t get connected to an Expert
The chat was just close down.
I gather that will be it, 2 days until the 31st.
