I can’t subscribe for some reason every time I try to sign in it offers me the 50% discount

It's my pleasure to help you successfully subscribe to QuickBooks Online, @info-recyclingru.

The 50 % discount offer is eligible for small businesses running multiple companies. This is a limited time offer for customers entitled to obtain a bulk-pricing discount package. 

If you wish not to avail of the said offer, you can contact our support team to cancel the 50% discount. I'll show you how:

1. Sign in to QuickBooks Online account.
2. Go to the Help menu and click Contact us.
3. Type in your concern and choose Let's talk.
4. Select Get a callback.
5. Fill in the necessary information and click Confirm my call.

If you're unable to sign in, you can use our QuickBooks Online test drive. 

Once you successfully subscribe, you can start entering your transactions into QBO. I've got this great resource you can use through the process: Get started with QuickBooks Online.

Feel at ease in asking queries with managing Online subscriptions. I'm always around to lend a helping hand. Have a wonderful day.

@info-recyclingru 

Try open the following link on your private/incognito browser. The current discount rate is 60% off for 6 months.

https://quickbooks.grsm.io/UK