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Pay method disabled

Pay method disabled

Good morning i'm new to magento

I have a magento 2.2 working with payment methods
on the front end, all payment methods work perfectly

in the payment method manager, all the fields appear disabled, and I need to change certain values
any idea why this happens to me?

also I need to change the analitycs key in the config and I can't
is there any possibility to edit the config.php somehow without error?

thanksSin título.png