Hi @hsrai
The screen is dimmed because the system is performing some tasks on Save of Company, please give it some time to complete these tasks, do not refresh it while the system is dimmed (making changes ). If you let the system complete this task, your problem should get solved. This problem usually occurs as during installation some India specific settings/doctypes were not installed correctly. Refer this GST settings missing in Accounts Module - #6 by nabinhait
Please change the value of country to India>Save and see if it solves your problem
Not related
Setting up the instance the first time requires a lot of memory, if you have low RAM it may time-out, regardlessly when you complete the setup, it does it normally.