1.35.0 was horribly broken.
On testnet, you should go to 1.35.2.
For mainnet, IOG now says 1.35.3 is okay, but I’d still stay on 1.34.1 until it is tested a bit better.
1.35.3 will not work on testnet due to the breakage caused by the other 1.35.x versions.
If you run a node or even a pool, please follow Telegram: Contact @SPOannouncements and/or IOG's Technical Community.