Notice —Cosmostation iOS app mnemonic phrase import issue

We’re aware that several users have been experiencing issues with their mnemonic phrase displaying a different set of addresses when being imported to the Cosmostation iOS app since the last update.

Our development team has nearly identified the issue and is working on a workaround for those who have been effected to regain access to their original account.

Please take note of the information below while we work on an official post mortem with guidelines on how to proceed for users who are affected.

Here’s what we have been able to discover so far:

• This is an issue on the iOS application
• A small number of users on iOS appears to have been affected
• Android users & most iOS users are unaffected
• Mnemonic phrases of affected users are displaying mismatched addresses after the recent iOS app update (hence the different address after re-installing the application and importing the same phrase)

We are working on a detailed post mortem and a workaround for affected users to regain access to their original accounts. For those who are experiencing this issue, please read the following carefully:

• If you see the error message below after attempting to make a transaction, it is likely that your wallet account is experiencing the issue mentioned above.

• To find out if your account is affected, attempt a transaction from your account(send/delegate/undelegate/etc.) and see if you see the error message above — “error code : 8 invalid pubkey: pubKey does not match signer address …….”

• Another way to check if your account is affected is to press on “Check Estimate Gas Amount” button in the “select transaction fee” step when you make txs. If the above step does not properly go through when you press the “Check Estimate Gas Amount” button & also experience the same mnemonic phrase importing a different address, your account is affected.
• If you do not encounter either of these error messages, your account is not effected.
• Do not uninstall the application if you’re experiencing this issue. If you choose to uninstall, make sure to have your mnemonic phrase backed up. *Important
• As long as you have your original mnemonic phrase, you will be able to regain access to the original account.
• We will provide a secure workaround for recovering your original account.
• Please wait for an official post mortem outlining the core issue and detailed instructions on how to recover your account.

To those who are affected by this issue — your funds are safe and you will be able to regain access as soon as we share information on the workaround.

Always remember that no admin will directly message you first. Anyone who asks for your personal information, mnemonic phrase, and/or keys first is NOT an admin. Please take caution and only communicate directly to our support e-mail support@cosmostation.io for any questions or inquiries.

Please also take note that you must have your original mnemonic phrase backed up in order to recover your original account, just as you would have any other keys used on other wallets backed up for your own security.

Report Guideline

If you are experiencing the issue above, please follow the guideline below and send us your information to our official support e-mail — we will be gathering basic information of affected users to communicate and walk you through the recovery process once the post mortem and workaround is ready.

First, check if you are an affected user.

• Try making txs from your account and see if the “error code : 8 invalid pubkey: pubKey does not match signer address …….” error message appears.
• If you do not see the above message when trying to make a tx, your account is not affected.
• Press the “Check Estimate Gas Amount” button in the “select transaction fee” step when you make txs.
• If the app crashes when you press the “Check Estimate Gas Amount” button & also experience the same mnemonic phrase importing a different address, your account is affected.
• If you see the error message, try importing a new wallet in the same hd path using the same mnemonic phrase. If the newly imported address is different from the address you originally had from the same mnemonic phrase, your account is affected.

***Have your mnemonic phrase backed up securely at all times
***Do not uninstall the application when you encounter the error message above. If you choose to uninstall the application, make sure to have your original mnemonic phrase backed up securely word-by-word before uninstalling. Without your original mnemonic phrase linked to your original account, you will not be able to regain access to your account.

If your account is affected, please send us an e-mail containing the information below:

• What mobile device are you using? (iPhone11/iPhone10/etc.)
• Which networks are you experiencing this issue in?
• Complete list of affected wallet addresses
• Are there additional comments/information you’d like to provide?

Send reports to: support@cosmostation.io

E-mail titles must follow this format:
[Mnemonics Issue] (your affected networks)

ex) [Mnemoincs Issue] Cosmos/Akash

Thank you.