I rented a book on this website and I don't know how to return it?

[tuna]

I rented a book on mydotr.com and I don't know how to return it? It is due tomorrow!!! /: I don't have my computer at the moment and I can't log on or check! I tried to on my phone but it is just not working! Anyone online can you help me figure out the return adress or something! Please i would give extra points but I don't know how to? Also can you tell me how to maybe I'll give you more points for that if I figure out how to?

[Jordan Graves]

where ever it came from (the mail address) just mail it back to that mail address. (sorry for bad grammar)