After an update I got the same pop-up as posted above, but instead of making Litecoin faster, it's now stuck in February. Newer transactions aren't showing, so I guess I can't make a transaction now either because it uses outdated Blockchain data and my balance is incorrect.
This morning I saw an update to Unstoppable Wallet, which fixed the LTC sync issues.
Which update version of Unstoppable Wallet you are talking about here ? I just checked my app, and it is still
0.41 and no further update is available.
In that 0.41 version they claimed that they have Litecoin Sync boost but that doesn't seem to work properly.