LogMeIn is retiring Xmarks from its line of products as of May 1, 2018. After this date, you will no longer have access to Xmarks.
There will be no impact to your LastPass Premium account. In addition, any remaining balance previously paid towards Xmarks will be applied as a credit towards your LastPass Premium account.
https://betanews.com/2018/04/01/xmarks-to-close/
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