Some bugs

Hello, i know you will release a new version soon, i just have seen some bugs

I have set up a fundraiser with goal to 5 000 €, when i update it, it goes to 500 000 €, and if i update again it goes to 50 000 000 .... It's the same thing with rewards.

When i try to pay with paypal i have this error message
Fatal error: Cannot use object of type WP_Error as array in L:\wamp\www\a\wp-content\plugins\fundraising\lib\gateways\paypal.php on line 141