There are 2 possible reasons why you can't re-crawl your website:
1) You have a paid RYTE account: Did you stop a running crawl and then want to start a new one? please wait a few minutes so our system can clean up the data. Please wait about 5 minutes until you start a new crawl.
2) You have a RYTE FREE account: With such an account, you can only crawl once a month. So please wait until you can run a new crawl or upgrade to a Basic account, which allows you to run an unlimited number of crawls.