MT4 Instant execution order

[Forex Trader]

Hello,

form Friday afternoon my platform is not giving me the option to open a instant execution order, is missing the yellow Execute button .....

I try few MT4 platforms, form different brokers and the same thing happens on all of them.

I try to change the lot size, I uninstall the platform and install a new one and still nothing has changed...

And the market was open at that time.

Please can somebody help me fix the problem, I think something happened on my computer but I dont know what .

thank in advance