change email address to another existing one

[sar_sst_regulylgy]

I cant change my email address to an   EXISTING one 

[padi*0409]

If an email address has ever been used on eBay in the past it cannot be used again.

[paper-jack]

According to Ebay's help section:

"If you need to change any of your details, such as your name, phone number, date of birth, address or email address, you can do it in My eBay - opens in new window or tab. Here's how:

1. Go to the Account - opens in new window or tab section of My eBay.
2. Select Personal information.
3. Find the section you need to update, and select Edit.
4. Enter your new details.
5. Depending on what you're updating, you'll be prompted to Save, Submit or Confirm"

[domino-710]

As Padi - mentioned you cannot use an already used email address on eBay.

Have you used the existing (the one you want to switch to ) on eBay before. ??