Your support credits DO NOT roll over. The Silver plan is like an insurance policy for your website if something breaks, site gets hacked, or goes down for whatever reason. The Gold plan is designed for website owners that know they will need work done each month and who would also like the peace of mind that they can recover their website back up if it goes down. Support Credits are normally $120 per credit or hour.  This is an opportunity to get a credit for $50 each, up to 3 credits or hours of work. If that isn’t you, then consider the Bronze or Silver Plan.