There is no other way to get the password for the ring back . Make sure next time a password comes up, have a pen and some paper ready! When you have donated 15,000 you will get a password for a cape, then when you have donated 30,000 you will get a password for a crown.
The only other way to get the password for the ring back is resetting your tamagotchi.
what is your tamagotchi v3 username? ask some1 if they have the same username as you and then get the password of them. the same thing happened to me i got the password used it got the ring but lost the password after. but my friend had the same username as me and gave me the password so i can now use it on mine.if you want any other v3 advice then post me on tama talk not email!. me and my friend have all the 7 v3 cheats plus a password cheat for clone and pen. only for v3. also if any1 has a v2 we have a floder eith that on to with lots and lots of stuff we are tamagotchi mad so if you need any advice then please give me a post on tama talk. my friend has joine tama talk 2 to when i see her in skool i will get her username for tamatalk and give it out so that if you need any adive then just give us a post on tamatalk! not email!