Try creating a query in MS Access that formats the date fields correctly for SQLite. For example, if your table is ACTIVATED_TABLE_2021_01 and the date fields are Expiration_Date and Activated_Date, you can use:
SELECT
Warranty_Code,
Warranty_PN,
Warranty_Descr,
Serialnumber_Or,
Product_Purchase,
Brand_Of_FG,
AGS_SO_Number,
Format([Expiration_Date], "yyyy-mm-dd hh:nn:ss") AS Expiration_Date,
Format([Activated_Date], "yyyy-mm-dd hh:nn:ss") AS Activated_Date
FROM
ACTIVATED_TABLE_2021_01;
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hth
Marcin