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Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
lsreturns date without year.
/log=C:\path\to\winscp.logcommand-line argument. Submit the log with your post as an attachment. Note that passwords and passphrases not stored in the log. You may want to remove other data you consider sensitive though, such as host names, IP addresses, account names or file names (unless they are relevant to the problem). If you do not want to post the log publicly, you can mark the attachment as private.
lscommand is displaying file dates without the year, even for 1+ year old files, which makes it impossible to infer the correct date if the server holds any old files.
openthe server in question, enter username & password, then type the command
ls. Here's a sample of the output:
---------- 0 5305 Mar 7 11:02 XXXXXXXXXX 2020_03_07_080245.xlsx
---------- 0 5305 Mar 8 11:02 XXXXXXXXXX 2020_03_08_080254.xlsx
---------- 0 5305 Mar 9 11:02 XXXXXXXXXX 2020_03_09_080243.xlsx