Google has a tool to do an account security checkup
It will show a list of security checkpoints. Each of them will contain a list of items to be reviewed by you including a link to a help article that explain each risk.
Suspicious access to my Gmail account from "Authorized Application"
Regarding the "Can't reach this page", the most straight forward solution is to clear the cookies and delete the cache of your web browser. Then sign in again to your account.
Regarding being lock out from time to time, for security reasons, Google will ask to sign-in again in the web browser every certain time.
There are several settings that you could manage to control how your users access Gmail for your organization
From Tailor Gmail settings for your organization
Learn about each setting
End user access settings
To access these settings from the Admin console home page, go to Apps
G Suite > Settings for Gmail > End User Access.
POP and ...
Everything is safe.
I've contacted GitHub support about this, and this is their answer:
I've confirmed with our notifications team that the email_token parameter is not sensitive nor poses any security risk. The token is just used for tracking clicks in our notification emails.
I've opened an issue with our team to see if we can tidy these email ...
As it was mentioned on the other answer Google doesn't offer a place that include a list of the connected spreadsheets but you could create automatically that list by using Google Apps Script.
The access rights that the connection implies is read only and it's granted to the account that authorized the access. This connection will work while the authorizer ...
To your pointed technical question, there are no technical issues with allowing the form to continue to exist client-side. It's always a click or two away in any case.
If asked over on the UX SE, I'm sure it would come up that it's a waste of space. Almost universally, interfaces should be individually optimized for the current situation. Even Google opts ...