Solved

Cannot place bid for staff or drivers

What did you try to do?
Tried to place bid on driver and staff.

What happened instead?
nothing

Did the problem happen while using wi-fi, mobile data, or both?
Both

Did the bug happen in the app, on PC, or both?
Both

What is the model of your device?
Samsung s 20+

What is the operating system?
Android

What is the version number of the operating system?
Android 11

What operating system is your PC?
Windows 10

Which browser did you experience the problem in?
Edge/Chrome

Can the bug be reproduced?
yes, After the bid cycle is done the new one i cannot buy still

Additional comments:
I can purchase on my other account but not this one

Clear your cache and it will then work

Clearing Cache worked for my phone the Web Page is not grey on both accounts

Same here. After new transfers system is rolled out, I cannot place bids. I'm going on the website over the mobile browser, not the app, but although the bidding window is still open (2+minutes to go), the place bid button is grayed out and cannot be used.

i can confirm it was solved by clearing browser data which is inconvenient for every session in every site is removed. but the issue got fixed 

Clearing cache in iOS does not fix this problem

Very strange.  Account on iPhone works, account on iPad does not even after clearing cache.

this seems to be fixed after the maintenance again. I haven't had a problem with the browser or phone after. 

May I ask if your iPad runs on a version below iOS 13?

No it was iOS 14.8, but the issue seems to have cleared up today