I've experienced a similar issue over the last few months. My success score, which was 9 in May, dropped to 8 in June and then to 7 and 6 within one month. The primary reason was communication growth.
Fiverr gave me a one-month period to improve. I took a one-month grass period to analyze where I was going wrong. Was it just communication that needed improvement, or something else? I realized that four points couldn't be deducted just because of communication.
So, I started examining things more closely and identified time management as a potential issue due to my studies. I fixed my schedule, allocating specific times for Fiverr, and ensuring timely delivery and communication with buyers.
Within a month, my success score rebounded from 6 to 7, and I regained my Level 2 Seller status, which made me incredibly happy.
Additionally, I enhanced my communication by:
1. Sending formal and more detailed messages.
2. Responding to new buyers within 30 minutes (previously within 1 hour).
3. Initiating over-communication with buyers, even responding elaborately to simple acknowledgments.
4. Ending each message with: 'If you have any further questions or concerns, feel free to message me anytime during my working hours. I'd be delighted to assist.'
Perhaps that's why my success score increased from 7 to 8 within just three weeks. I'm unsure if it's solely due to improved communication or other factors, as some gigs still show room for growth in communication.
My point is, I've been following this strategy for the last 1-2 months, which has helped my success score rebound from 6 to 8 within two months.