Single file downloads throws error

Just in the last few weeks I have a strange issue occurring with the plugin.

For products with multiple files, the “Download All” button works just fine, but single file downloads throw the following error:

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<Error>
<Code>AccessDenied</Code>
<Message>Request has expired</Message>
<X-Amz-Expires>5</X-Amz-Expires>
<Expires>2021-03-29T20:06:01Z</Expires>
<ServerTime>2021-03-29T20:06:12Z</ServerTime>
<RequestId>A0HF96CFVRP9DA6T</RequestId>
<HostId>w9CvOwQaAMMXvBvLDMQDILBtWSzKUt+m+j8+A5p2h2zurDRPPFeorh3mppJP8N3EtDDaubmla4k=</HostId>
</Error>

I’ve tried messing with all the settings, switched back to the default WordPress theme, and deactivated all plugins, but no luck.

Anyone have ideas?