The Graph protocol is midway through its migration to L2 on Arbitrum. That means that graph indexers on ETH mainnet are moving over to the Arbitrum chain and any staked GRT tokens on mainnet also need to be manually migrated to Arbitrum.
Seeking Yield by Staked - Issue 91: ⛓️ Tracking ETH2, 📰 Staked Media Mentions, 🎉 The Graph Network Mainnet, 🖥️ ETH Staking Webinar Recording, 📊 Current Staking and Lending Yields, & More