Unable to use

[LilyWang0323]

Hello! I'm a newcomer to Dweb. I try to use dweb.page to upload a picture, but it shows that the current IPFS gateway you are using isn't writable.
I have 2 questions:
1.If I didn't install IPFS, could I upload files to dweb and search files?
2.Console shows that QmaG6gCPHBKEvQtCTG7ELa1J1fh9K7iitcCwrWponxFydy:21 The following IOTA node is unavailable. How can I solve the problem?

My English is not that good. I hope that you can understand what I mean.