Hello. I'm not a garage door expert, but try checking to see if the remote control works. The batteries in the remote control may be low or need to be replaced. Also, the photo sensors that are responsible for the security system could have triggered. Check them and if the issue is not resolved, then it is better to call a specialist. Here are the contacts of a trusted company in Florida https://markodoor.com/ . They installed my gate and periodically service my garage. Because if the problem is electrical or even mechanical (springs or cable), then without a specialist you are unlikely to figure it out on your own.