I recently received this email from Xapo :
Hi Bill Gates,
Time's running out for you to withdraw or convert your Bitcoin Gold (BTG) available balance!
Right after the Bitcoin fork that took place on Tuesday, October 24th, anyone owning Bitcoin at Xapo received an identical amount of Bitcoin Gold in their newly created BTG Pockets.
Since March 14th and until June 14th at 23:00 GMT, Xapo has made it available for you to withdraw your total BTG balance to an external BTG address. Xapo may also, at its sole discretion, allow you to convert your BTG balance into BTC through the Xapo app.
After June 14th, a mandatory conversion process will take place according to the information that is already available in our FAQ section.
You can also visit our FAQ section to review a step by step process on how to withdraw or convert your BTG.
For more information feel free to contact us. We will be happy to assist you!
Best regards,
Xapo Team
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If you managed your own Private key, then you can chose when you want to claim your forked coins and nobody will force
you to take action, before it is too late.
We use these services and many of them "claim" the forked coins, even without
your concent, because they control your Private key.