I've been playing this just about every day or other day for a couple weeks without issue and haven't made any drastic changes on my computer. Daily/infinite/multiplayer mode became greyed out. The "you must be logged into Tachyon to play..." message appears when I hover over those options.

I'm using Steam to access the launcher that takes me to the game.

I verified the file integrity, it would find and fix some file and would show a download of 140kb to no avail. I tried it a few more times, it downloaded something called Steamworks Common Redistributables, but no change. I quit/restarted Steam. I also tried switching my version to a prior Beta version then switched back to the current one with no luck. I also restarted my computer.

Any ideas?

Device info from log file:
Unity Version: 2018.4.36f1

Unity Platform: WindowsPlayer

DeviceName: myLaptopName

DeviceType: Desktop

ProcessorType: 13th Gen Intel(R) Core(TM) i9-13900HX

OperatingSystem: Windows 10  (10.0.0) 64bit

ProcessorCount: 32

SystemMemorySize: 32507MB

GraphicsDeviceName: NVIDIA GeForce RTX 4080 Laptop GPU

GraphicsDeviceVendor: NVIDIA

GraphicsDeviceVersion: Direct3D 11.0 [level 11.1]

GraphicsMemorySize: 3072MB

GraphicsShaderLevel: 50

SupportsShadows: True

Here's what appears in my log file:

00:00 - [Steam] Initializing Steam

00:00 - [Tachyon] Initializing Tachyon with version number:1.23.65337

00:01 - [Tachyon] Requesting Seasons List

00:01 - [Tachyon] Tachyon seasons list response failed or is empty.

00:01 - [Tachyon] Requesting cached Tachyon Authentication.

00:01 - [Tachyon] Cached authentication not available

00:01 - [Tachyon] 'Maintenance' - 'Online services will be down on Oct 18th starting at 10am ET for up to 2 hours.'

00:01 - [Tachyon] Requesting Tachyon Authentication.

00:01 - [Tachyon] Authentication response was: Fail