Platform limits
While the GetReplies platform does not restrict you from sending connection requests and messages, there are some safe limits recommended to avoid getting blocked.
Recommendation
Account type: Have a LinkedIn Premium or LinkedIn Sales Navigator account
Recommended Limits:
Connection invites: 20 /day (or 100 /week)
Profile visits: 30 /day (or 150 /week)
Messages: 30 /day (or 150 /week)
Inmails: 5 /day