FYI, if you do have an incorrect plant, your first (and best) option would be to contact the seller.
1) There are over 100,000 registered daylilies now, so the best way to narrow down what is 'possible' is the limited selection your seller actually grows ...
And 2), if they sent a plant in error, they would know what most likely could have been dug by mistake (ie, a plant growing next to the one you requested). Give them a picture of what is blooming to be sure what else it could be ... there may be one near your request that was dug instead. (This happened to me, several years back: I ordered 'Get Jiggy' and received 'Browns Ferry Peaches 'n Cream' - a lovely error.)
3) If you did receive an incorrect daylily by mistake, it would be the responsibility of the seller to correct their error and send the plant your ordered / paid for. So give them a chance to do that.
Lastly, not every daylily 'looks' the same in every garden ... So, yes - you may actually have received the correct plant. Differences in zone, climate / weather, nutrients, soil type, etc. can affect the look from one garden to another or one year to the next.
And some plants take time to settle in before they bloom 'true' (Indian Giver took a full year in my garden before it bloomed correctly).