Being the largest domain provider, godaddy is doing heavy email marketing with non-rejectabl offers. However, after we got a nice price and try to check out, the system does not accept and produce out this error

Because the code we applied provides us 35% discount and can only be processed by credit card, so I guess it should be problem from my credit card provider. However our cc provider confirmed everything is working good on their side. So finally I have to contact godaddy support for solution. Here're our communication with their support staff

You're chatting with Brandi.
Brandi –
Hello and thank you for contacting Chat. My name is Brandi. How can I help you today?
Kenny –
Hello. I'm ordering domain name and got error msg during check out:
Kenny –
There was a problem processing your transaction. Please verify your payment information or use an alternate form of payment.
Kenny –
I'm using credit card
Brandi –
Ok let me take a look
Brandi –
Upon review of your message it sounds as though you are attempting to place an order online but are receiving an error message. The error you are receiving indicates that the promotional code you are trying to use is not eligible at this time. We are unable to process orders including this promotional code on your behalf, as the codes are for use online only. Most codes have various usage restrictions and as such we suggest reviewing the email or marketing notice you received announcing the code to determine the code's eligibility. You can try to clear the shopping cart, clear the cache in your browser and place the domain name again. Or let me know and I can reload your shopping cart again with this domain name.
Brandi –
Kenny –
I'm ordering xxxxx.com this domain..
Kenny –
for 5 years
Kenny –
could you help with this issue?
Brandi –
Yes I can process the 5 year domain here for $60.86
Kenny –
I'm redirected by this code "CJCRMN99U" which gives me $41.85 in total
Kenny –
can it be done?
Brandi –
That code shows as invalid
Kenny –
Anyway, it's your offer.. could you apply a good code for better price? I'm trying to register because of the offer
Brandi –
The regular pricing is $70.85 and I can do it here for $60.86
Kenny –
no better one?
Brandi –
Unfortunately no
Kenny –
can I pay via paypal on file?
Brandi –
Yes I can process that here with the PayPal on file
Brandi –
In order to process the order please type "I agree" to the following: 1) The Universal Terms of Service Agreement. 2) The Domain registration  Agreement. 3) The Charge of $60.86 on the PayPal
Kenny –
yes
Brandi –
Ok that has been processed for you Kenny!

So we see.. we're trying to get some discount with their code, but can't pay it although their system does generated a good price. After a bit research online, we found many people faced similar problems. Sometimes their support can help process it directly with that price but sometimes no like us.