How to remove the solution
From Planfix
You can delete the configuration in Account Management / Configuration:
'IMPORTANT:' Only the owner or administrator of the account can delete configurations.
Select the one you want to delete from the list of installed configurations.
Далее нажмите на кнопку "Удалить конфигурацию"
В дальнейшем, вы сможете повторно установить конфигурацию при необходимости.