I've verified this in the past. Just download the binaries from
electrum-ltc.org and verify either Thrasher's or Pooler's signature. If you have a version prior 3.3.3, as it sounds you do, update as soon as possible.
IMPORTANT NOTICE (February 2019)
Versions of Electrum and Electrum-LTC older than 3.3.3 are vulnerable to a phishing attack, where malicious servers are able to display a message asking users to download a fake version of Electrum. To prevent user exposure, versions older than 3.3 can no longer connect to public servers, and must be upgraded. Do not download software updates from sources other than electrum.org and electrum-ltc.org.