Don't use the web wallet if it is having issues on your end. You can set it up locally pretty easily:

Docker - https://lisk.io/documentation?i=lisk-docs/DockerInstall
Binaries - https://lisk.io/documentation?i=lisk-docs/BinaryInstall

Make sure to read the documents carefully. If you use Docker you have to SSH into the Docker instance before continuing to Step 2, so make sure to write the default Docker user/pass down so you have access to it:

SSH from terminal:
ssh docker@192.168.99.100

PuTTY (GUI SSH Client):
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html