Ardour 6 plugins have turned grey in a track and wont turn back on

Hello,
On a track I’m working on I’ve opened my save and all the previous audio plugins that I used to configure my sound have turned grey and shrunk to a smaller rectangle in the mix tab while when they were working they’re green. How can I turn them back on or have they been corrupted?

nevermind. I restarted the software and they’re working now