Let's go through some troubleshooting steps to resolve the issue where your transactions do not appear when you try to reclassify them in QuickBooks Online (QBO), Ayesha.
Before troubleshooting, ensure that you filter all drop-down options on the Reclassify Transactions page before clicking Find Transactions.
Please see the screenshot below for reference:

However, if you've already filtered the drop-down options and the transaction type still doesn't show up. I highly recommend clearing your browser's cache. Sometimes, temporary files and data build can affect how QuickBooks performs.
After clearing your browser's cache, please restart it and check if your transaction types are now visible. You can also consider switching to a different browser to help identify the problem.
If the issue persists, I suggest contacting our QuickBooks Online Support team so they can review your account in a secure environment, identify the cause of the problem, and explore possible solutions. Also, be sure to check their support hours for timely assistance.
Please feel free to respond below with updates on how things are progressing on your end.