user57759: I SENT XPUB and tried to send many messages blockchain never respond. and one account has been more than 5 days. 
i am having "validation Error-Mempool-conflict. what is this and how long it will take? Is this something blockchain stocks and steal our money? i have many accounts and two of my accounts got same issues since last week. 

user57730: I found the solution guys.
Possible fixes, broadcast your transaction on localbitcoin blockexplorer (yeah they have one) :
https://localbitcoinschain.com/tx/send
All fine with your coins the problem is in blockchain mempool and to unblock need to send transaction manually to bypass the blockchain mempool.
Solution step by step:

Open chrome inspector in the network tab
Try to create a transaction and get "Validation error"
Open "Headers" of pushtx request and copy content from FormData, field tx: "You need that content"
Enter that transaction in form here https://localbitcoinschain.com/tx/send and click submit
You'll get transaction id and can check it in blockexplorer this transaction belongs to you and you need to wait when it will be confirmed


57759: <p>I SENT XPUB and tried to send many messages blockchain never respond. and one account has been more than 5 days. 
i am having "validation Error-Mempool-conflict. what is this and how long it will take? Is this something blockchain stocks and steal our money? i have many accounts and two of my accounts got same issues since last week. </p>
 57730: <p>I found the solution guys.</p>

<p>Possible fixes, broadcast your transaction on localbitcoin blockexplorer (yeah they have one) :
<a href="https://localbitcoinschain.com/tx/send" rel="nofollow noreferrer">https://localbitcoinschain.com/tx/send</a></p>

<p>All fine with your coins the problem is in blockchain mempool and to unblock need to send transaction manually to bypass the blockchain mempool.</p>

<p>Solution step by step:</p>

<ol>
<li>Open chrome inspector in the network tab</li>
<li>Try to create a transaction and get "Validation error"</li>
<li>Open "Headers" of pushtx request and copy content from FormData, field tx: "You need that content"</li>
<li>Enter that transaction in form here <a href="https://localbitcoinschain.com/tx/send" rel="nofollow noreferrer">https://localbitcoinschain.com/tx/send</a> and click submit</li>
<li>You'll get transaction id and can check it in blockexplorer this transaction belongs to you and you need to wait when it will be confirmed</li>
</ol>
