Good afternoon! I ran into a few problems while using the library. I am 
using this sample from github 
https://github.com/bitcoinj/bitcoinj/blob/master/examples/src/main/java/org/bitcoinj/examples/SendRequest.java,
 
but added WalletFabric for creating wallet with existed key
Library has created a file with blockchain .spvchain and .wallet on first 
run

1.  The balance in it is correct. But if I delete the .wallet file and run 
the code again, the Wallet#getBalance() method shows 0 and no transactions. 
Do I need to delete .spvchain when deleting .wallet or can I somehow update 
the wallet?

2. By running the code from the example on the github, I sent some test 
coins, but the transaction is not confirmed and is constantly in the 
pending state in the wallet. Why this can be and how to fix it (I can 
provide transaction logs)?

3. Sometimes synchronization is very long and can take 30-50 minutes. The 
following logs are in the console: *Peer does not support bloom filtering.* 










*ConnectionHandler.handleKey: Error handling SelectionKey: 
java.nio.channels.CancelledKeyException 
java.nio.channels.CancelledKeyException        at 
java.base/sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:74)  
      at 
java.base/sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:133)  
      at 
java.base/java.nio.channels.SelectionKey.isWritable(SelectionKey.java:378)  
      at 
org.bitcoinj.net.ConnectionHandler.handleKey(ConnectionHandler.java:244)    
    at 
org.bitcoinj.net.NioClientManager.handleKey(NioClientManager.java:86)      
  at org.bitcoinj.net.NioClientManager.run(NioClientManager.java:122)      
  at 
com.google.common.util.concurrent.AbstractExecutionThreadService$1$2.run(AbstractExecutionThreadService.java:66)
  
      at 
com.google.common.util.concurrent.Callables$4.run(Callables.java:121)      
  at 
org.bitcoinj.utils.ContextPropagatingThreadFactory.lambda$newThread$0(ContextPropagatingThreadFactory.java:48)
  
      at java.base/java.lang.Thread.run(Thread.java:832)* 

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