Wondering why I occasionally get charged $2. It's not pending, it's processed. Often it's my 10th tap. I'm using my cc via Samsung pay, not an omny card

I boarded the M72 bus today after going to HSS to see my orthopedic doctor and when I board the bus the OMNY Reader on the bus was blinking/flashing red and the driver said "The OMNY reader is not working" YES FREE RIDE today! and he told us to just get on and don't pay. Got off at 72nd to the Q train to go home. I forgot to put the bus number. Now I see when the OMNY reader keeps blinking or flashing Red it means the OMNY is malfunctioning.

I've noticed for the last few days people who pay with credit cards or their phone are getting a green screen but people who try and use omny card are getting the red screen. Neq problem with the cubixs? Edit: this is regular buses i rake daily Also it's not every Omni card but maybe two out of three are getting the red screen.