The following was shared from a Reddit user aerrejon. Plan on running through the wallet folder rename step. Hoping that does the trick.

Check this troubleshooting guide: https://siawiki.tech/wallet/lost_transactions_troubleshooter or this post by Steve of today: https://medium.com/@sia_steve/sia-support-update-transactions-and-syncing-52dad5858711

If you have to delete something, do not delete the whole appdata folder including the host sub-folder (don't do that again, don't be isnane! :-) ), just the specific sub-folder you need to delete