emails not working

my outlook account keeps freezing when I'm sending an email. and then when I go to get out of it.... it says your email hasn't been sent do you still want to continue. also when I'm typing sometimes it will come up with a red line underneath my words as if my spelling is not correct, although it is. then when I try to change it all it has is inspect element and then I go into that and I cant do anything more due to I don't understand it..... so it saying stuff like this and more

<textarea tabindex="-1" class="cke_source cke_enable_context_menu" role="textbox" style="outline: invert; width: 100%; height: 100%; text-align: left; min-width: 100%; max-width: 100%;" dir="ltr" aria-label="Rich text editor, vB_Editor_001_editor, press ALT 0 for help.">my outlook account keeps freezing when I'm sending an email. and then when I go to get out of it.... it says your email hasn't been sent do you still want to continue. also when I'm typing sometimes it will come up with a red line underneath my words as if my spelling is not correct, although it is. then when I try to change it all it has is inspect element and then I go into that and I cant do anything more due to I don't understand it..... I cant put down what it is say but</textarea>

sorry mate I'm still new to this. so how do I upgrade. on my tab it has outlook.com and if I go to the menue I can go to excel or word online along with other ones such as one drive and so on and so forth.... so I'm not sure if that's what you ment or not get back to us

so I have windows 10. I don't know how to check for an updated version. my internet connection is stable. as for the spell check how do I check if its uk or usa in outlook.com????