Why can't I send my Litecoin out?
...you'll need to convert the Litecoin Address that begins with "3" to an address that begins with "M." Please browse to this link in order to convert your 3-format address into an M-format Litecoin address.
For Example, this 3-format Litecoin address:
Turns into this M-format Litecoin address:
If you send Litecoin to the new M-format address, it will go to the original 3-format Litecoin address.
1.34.1: Improved Litecoin SegWit address detection. Also added additional safety measures to save users from accidentally sending Litecoin to a Bitcoin SegWit address.
As always trying first with a small amount is a good idea. Make sure that the conversion link site is authentic before using!