Duplicate transactions and subscriptions error

I have two issues occurring with the plugin. Both of these issues have been posted on this forum already but no solution has been posted.

The First issue has to do with all transactions; when any transaction is processed to Stripe it first does a checkout_preprocessor transaction then releases the transaction without capture. Immedietly afterwards it processed the transaction succesfully. This error does not produce any error in the wsspg error log.

The second issue is that subscription transactions fail with “Error processing checkout. Please try again” and a log entry:

01-17-2018 @ 23:39:09 – [ error ][ subscriptions ][ req_HYpoqgPC79Q0T0 ]: stdClass Object
(
[type] => invalid_request_error
[message] => No such token: card_1BlQUnKIcIAJ24alaedTQtL6
[param] => source
)