Jun 18, 2020 - 06:37 AM
Yes, the spacers are to be placed in between the toilet seat feet to alleviate the gaping issue.
Please try sliding the bidet forward as well. If that does not work, you may need a flat-bottomed seat to prevent gaping.
Contact Bio Bidet Customer Support directly at (877) 339-5214; Monday-Friday 9am-5pm Central Time if you have any further questions! Thank you, Bio Bidet Customer Support
Source: NonElectric Gaping Issue