Mother's Day flowers... M&s don't like my message?

Lifeforms

Hello!
I'm looking to get some Mother's Day flowers delivered, catch is I want them delivered on Sunday.

I was going to buy off Marks and Sparks. But upon ordering, it tells me my loving message to my mum is likely to be offensive :eek:

Important Message

We're sorry, but the gift message you entered has a word or phrase that M&S guidelines do not allow. Please change any words which may cause offence.

So okay. All I put was "Happy Mothers Day! Lots of Love, Myname"
Can't even see anything in that even joining two words together which is offensive. They offered free postage on that named day, and I'm hoping it would actually work.

Anyone had this before? Getting worried about flowers being delivered after all the valentines issues.