The Atlassian Community can help you and your team get more value out of Atlassian products and practices.
I try to find "AutoBlocks" in Marketplace but is missing.
May I perform installation plugin "AutoBlocks for Jira" for my Jira v8.8.1 ?
It's not yet flagged as compatible for that version of Jira. It will be, when it's gone through the relevant testing. If you're willing to install an unsupported version though, you can simply download the install file and upload it in "manage apps" manually.