Hello,
If you are using file generator css you may simply regenerate your file through your XStore Control Panel settings
Otherwise download style.css and xstore.css files from this page https://dropmefiles.com/zzzaQ and re-upload them into themes/xstore folder
or you can add next code in Theme Options > Theme cusrtom CSS > Global custom CSS and remove it after updating to next theme version
@media only screen and (max-width: 992px) {
.woocommerce-MyAccount-navigation-wrapper {
width: 100%;
margin-bottom: 20px;
}
.MyAccount-dashboard-buttons {
flex-wrap: wrap;
margin-bottom: -10px;
}
.MyAccount-dashboard-buttons .btn {
white-space: nowrap;
margin-bottom: 10px;
}
}
Regards