# Issue withdrawing FLOW from Coinex

**URL:** <https://forum.flow.com/t/issue-withdrawing-flow-from-coinex/2132>\
**Category:** New To Flow\
**Created:** [June 27, 2021, 6:57am UTC](https://forum.flow.com/t/issue-withdrawing-flow-from-coinex/2132 "2021-06-27T06:57:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tldr](https://avatars.discourse-cdn.com/v4/letter/t/839c29/32.png) [@tldr](https://forum.flow.com/u/tldr)\
**Post date:** [June 27, 2021, 6:57am UTC](https://forum.flow.com/t/issue-withdrawing-flow-from-coinex/2132/1 "2021-06-27T06:57:13Z")

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Hi I bought FLOW from Coinex and tried to send it to my ledger nano through [port.onflow.org](http://port.onflow.org). It never arrived and then when I checked, I found this error message:

[Error Code: 1006] invalid proposal key: public key 0 on account d7ac95a418791a91 does not have a valid signature: [Error Code: 1009] invalid envelope key: public key 0 on account d7ac95a418791a91 does not have a valid signature: signature is not valid

Please let me know what happened or if there’s any way to fix this.  
Also, I just made a Dapper Wallet and was wondering if I would have more luck sending the FLOW tokens there.

Thank you.

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**Author:** ![flowjosh](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.flow.com/flowjosh/32/362_2.png) [@flowjosh](https://forum.flow.com/u/flowjosh)\
**Post date:** [June 29, 2021, 8:11pm UTC](https://forum.flow.com/t/issue-withdrawing-flow-from-coinex/2132/2 "2021-06-29T20:11:59Z")

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I would check with Coinex. It sounds like an error on their end.

Dapper Wallets can’t hold FLOW unfortunately, so if you want a non-custodial solution to hold FLOW, you’ll need to use ledger or Blocto.